Body Burden and the wellness Revolution

This Study—the latest indication that all of us carry a “body burden” caused by widespread chemical use in our society—shows the need for a system that relies on organic agriculture and alternative pest controls. The constant exposure to toxics we experience today is a major cause of chronic illness, including cancer, birth defects or abnormal development, brain or nervous system damage, hormonal and reproductive imbalances, and impaired immunity, to name just a few.

Meanwhile, individuals should take advantage of the organic products available in health food stores, and the herbs and nutrients that support detoxification and the liver, the main organ of detoxification, as well as immunity—for example, silymarin, N-acetyl cysteine, calcium d-glucarate, folic acid, Reishi and shiitake mushroom, and turmeric. A healthy lifestyle and appropriate supplementation can offer some protection from societal pollution.

Sources: Third National Report on Human Exposure to environmental Chemicals, 2005, available at www.cdc.gov. Los Angeles Times, 7/22/05. A Brief Companion to CDC’s 2005 National Exposure Report, Physicians for Social Responsibility, www.psr.org. Pesticide action network, www.panna.org.

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Date: September 16, 2005 10:50 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Pesticide Report Shows Widespread Body Burden.

Women and Children Especially Vulnerable

Most Americans carry toxic pesticides in their bodies, according to a recent report. Often, the so called “body Burden” of these chemicals is well above government-defined safety levels. Included are pesticides linked to cancer, birth defects, low birth weight, declining sperm counts, and infertility.

Chemical Trespass, by the Pesticide Action Network, analyzes data collected by the Center for Disease Control (CDC) from blood and urine analyses of 9,282 people. Among the findings:

Pesticides residues and metabolites were found in every subject. The average person had 13 pesticides in his or her body. The Average 6 to 11 year old was exposed to certain organophosphorus (OP) pesticides at four times the levels deemed acceptable by the environmental protection agency. Children are especially susceptible to dietary pesticides since they eat more food on a body weight basis than adults.

Organochlorine (OC) pesticides were found as significantly higher levels in women. This probably reflects women’s higher body fat content; OC pesticides are stored in fatty tissue.

Mexican-Americans showed the highest pesticides exposure, probably due to their disproportionate employment in agriculture. However, the statistics did not include occupational information.

Many pesticides used widely in the past, such as DDT and chlordane, are still found in our bodies, even in children born years after they were banned.

Cause for Alarm?

The CDC, which tested for 116 environmental chemicals, stressed that presence of these chemicals in the body does not necessarily indicate disease and called for more study of the dosages that should cause concern. The Pesticide Action Network sharply criticized this approach as a “Failure to protect public health.” Much evidence links long-term, low-level exposure to chronic illnesses, the group said, and the problem is more acute when one considers the additive effects of combining chemicals.

Pesticides and the wellness Revolution

This study shows the need for a system that relies on organic agriculture and alternative pest controls. Meanwhile, individuals should take advantage of the organic products available in health food stores, and the herbs and nutrients that support detoxification and immunity—for example, silymarin, N-acetyl cysteine, Reishi and shiitake mushroom, turmeric, and much more.

Sources: Second National Report on Human Exposure to Environmental Chemicals, Center for Disease Control, available online at www.cdc.gov.exposurereport Chemical Trespass, Pesticide action network, available online at www.panna.org

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Date: August 02, 2005 03:52 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Benfotiamine raises the blood level of thiamine pyrophosphate (TPP)

Benefits

Benfotiamine raises the blood level of thiamine pyrophosphate (TPP), the biologically active co-enzyme of thiamine.4

Thiamine and its Co-enzyme, TPP

Thiamine (vitamin B1) plays an essential part in the metabolism of glucose, through actions of it co-enzyme TPP (thiamine pyrophosphate). TPP is formed by the enzymatically-catalyzed addition of two phosphate groups donated by ATP to thiamine. TPP also goes by the name "thiamine diphosphate." In the cytoplasm of the cell, glucose, a 6-carbon sugar, is metabolized to pyruvic acid, which is converted into acetyl-CoA, otherwise known as "active acetate." Acetyl CoA enters the mitochondrion, where it serves as the starting substrate in the Kreb’s cycle (citric acid cycle). The Krebs cycle is the primary source of cellular metabolic energy. TPP, along with other co-enzymes, is essential for the removal of CO2 from pyruvic acid, which in turn is a key step in the conversion of pyruvic acid to acetyl CoA. CO2 removal from pyruvic acid is called "oxidative decarboxylation," and for this reason, TPP was originally referred to as "cocarboxylase." TPP is thus vital to the cell’s energy supply. Benfotiamine helps maintain healthy cells in the presence of blood glucose. Acting as a biochemical "super-thiamin," it does this through several different cellular mechanisms, as discussed below.

Benfotiamine and Glucose Metabolism Benfotiamine normalizes cellular processes fueled by glucose metabolites.

As long as glucose remains at normal levels, excess glucose metabolites do not accumulate within the cell. The bulk of the cell’s glucose supply is converted to pyruvic acid, which serves as substrate for production of acetyl CoA, the primary fuel for the Krebs cycle. Of the total amount of metabolic energy (in the form of ATP) released from food, the Krebs cycle generates about 90 percent.5 In the presence of elevated glucose levels, the electron transport chain, the final ATP-generating system in the mitochondrion, produces larger than normal amounts of the oxygen free radical "superoxide." This excess superoxide inhibits glyceraldehyde phosphate dehydrogenase (GAPDH), as key enzyme in the conversion of glucose to pyruvic acid, resulting in an excess of intermediate metabolites known as "triosephosphates." Increase triosephophate levels trigger several cellular mechanisms that result in potential damage to vascular tissue. Cells particularly vulnerable to this biochemical dysfunction are found in the retina, kidneys and nerves.

Benfotiamine has been shown to block three of these mechanisms: the hexosamine pathway, the diaglycerol-protein kinease C pathway and the formation of Advanced Glycation End-poducts. As discussed below, benfotiamine does this by activating transketolase, a key thiamin-dependent enzyme.6 Benfotiamine stimulates tranketolase, a cellular enzyme essential for maintenance of normal glucose metabolic pathways.* Transketolase diverts the excess fructose-6-phosphate and glyceraldehydes-3-phosphate, (formed by the inhibition of GAPDH, as mentioned above), into production of pentose-5-phosphates and erythrose-4-phosphate and away from the damaging pathways. Benfotiamine activates transketolase activity in bovine aortic endothelial cells incubated in glucose.6 To test benfotiamine’s ability to counteract these metabolic abnormalities caused by elevated blood glucose, studies have been done in diabetic rats. Benfotiamine increases transketolase activity in the retinas of diabetic rats, while concomitantly decreasing hexosamine pathway activity, protein kinase C activity and AGE formation.6

Benfotiamine and Protein glycation Benfotiamine controls formation of Advanced Glycation End-products (AGEs).

AGEs have an affinity for proteins such as collagen, the major structural protein in connective tissue. AGEs are formed through abnormal linkages between proteins and glucose. This occurs via a non-enzymatic glycosylation reaction similar to the "browning reaction" that takes place in stored food.7 At high glucose concentrations, glucose attaches to lysine, forming a Schiff base, which in turn forms "early glycosylation products." Once blood glucose levels return to normal levels, the amount of these early glycosylation products decreases, and they are not particularly harmful to most tissue proteins. On long-lived proteins such as collagen, however, early glycosylation products are chemically rearranged into the damaging Advanced Glycation End-products. AGE formation on the collagen in coronary arteries causes increased vascular permeability. This vessel "leakiness" allows for abnormal cross-linking between plasma proteins and other proteins in the vessel wall, comprising vascular function and potentially occluding the vessel lumen. A number of other potentially harmful events may also occur, including production of cytokines that further increase vascular permeability. Endothelin-1, a strong vasoconstrictor, is over produced, increasing the possibility of thrombosis and generation of oxygen free radicals is stimulated.8 It is vitally important to support normal glucose metabolic pathways so that formation of AGEs is minimized. Benfotiamine, in the test tube (in vitro) prevents AGE formation in endothelial cells cultured in high glucose by decreasing the glucose metabolites that produce AGEs.9 Endothelial cells make up the membranes that line the inner walls of organs and blood vessels. In a rat study comparing the effects of Benfotiamine with water-soluble thiamin, Benfotiamine inhibited AGE formation in diabetic rats while completely preventing formation of "glycooxidation products," which are toxic by products of chronic elevated blood glucose. AGE levels were not significantly altered by thiamin.10 Benfotiamine also normalized nerve function in the animals. After three months of administration, "nerve conduction velocity (NCV)," a measure of nerve function, was increased by both benfotiamine and thiamin; at six months, NCV was normalized by benfotiamine, whereas thiamin produced no further increases in this parameter.

Dysfunctional glucose metabolic pathways leading to AGE formation occurs in endothelial cells of the kidneys. In a recent animal study, benfotiamine was administered to rats with elevated glucose levels. Benfotiamine increased transketolase activity in the kidney filtration system of these rats, while at the same time shifting triosephophates into the pentose pathway and preventing protein leakage.11

Safety

Benfotiamine has an excellent tolerability profile and can be taken for long periods without adverse effects.3,12 The statements in this fact sheet have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Scientific References

1. Bitsch R, Wolf M, Möller J. Bioavailability assessment of the lipophilic benfotiamine as compared to a water-soluble thiamin derivative. Ann Nutr Metab 1991;35(2):292-6.

2. Schreeb KH, Freudenthaler S, Vormfelde SV, et al. Comparative bioavailability of two vitamin B1 preparations: benfotiamine and thiamine mononitrate. Eur J Clin Pharmacol 1997; 52(4):319-20.

3. Loew D. Pharmacokinetics of thiamine derivatives especially of benfotiamine. Int J Clin Pharmacol Ther 1996;34(2):47-50.

4. Frank T, Bitsch R, Maiwald J, Stein G. High thiamine diphosphate concentrations in erythrocytes can be achieved in dialysis patients by oral administration of benfontiamine. Eur J Clin Pharmacol. 2000;56(3):251-7.

5. Pike RL, Brown ML. Nutrition, An Integrated Approach, 3rd Ed. New York:MacMillan; 1986:467.

6. Hammes H-P, Du X, Edlestein D, et al. Benfotiamine blocks three major pathways of hyperglycemic damage and prevents experimental diabetic neuropathy. Nat Med 2003;9(3):294-99.

7. Monnier VM, Kohn RR, Cerami A. Accelerated age-related browning of human collagen in diabetes mellitus. Proc Natl Acad Sci 1984;81(2):583-7.

8. Brownlee M. The pathological implications of protein glycation. Clin Invest Med 1995;18(4):275-81.

9. Pomero F, Molinar Min A, La Selva M, et al. Benfotiamine is similar to thiamine in correcting endothelial cell defects induced by high glucose. Acta Diabetol 2001;38(3):135-8.

10. Stracke H, Hammes HP, Werkman D, et al. Efficacy of benfotiamine versus thiamine on function and glycation products of peripheral nerves in diabetic rats. Exp Clin Endocrinol Diabetes 2001;109(6):300-6.

11. Babaei-Jadidi R, Karachalias N, Ahmed N, et al. Prevention of incipient diabetic nephropathy by high-dose thiamine and benfotiamine. Diabetes 2003;52(8):2110-20.

12. Bergfeld R, MatsumaraT, Du X, Brownlee M. Benfotiamin prevents the consequences of hyperglycemia induced mitochondrial overproduction of reactive oxygen specifies and experimental diabetic neuropathy (Abstract) Diabetologia 2001; 44(Suppl1):A39.

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Date: July 27, 2005 12:06 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Strontium Bone Maker 60 VC - Strengthen Bones

Benefits

Helps maintain strong, healthy bones.*

In Vitro and Animal Studies

Strontium is a bone-seeking mineral incorporated by ionic substitution for calcium onto the crystal surface of bone.2 In the test-tube (in vitro), strontium inhibits the activity of osteoclasts, bone cells that break down bone, or “resorb” bone as part of the normal bone remodeling process.3 The effect of strontium, in the form of strontium ranelate (a salt of strontium and ranelic acid), was studied in monkeys over a six-month period. Strontium altered the remodeling of bone in the monkeys, resulting in decreased bone resorption with a concomitant maintenance of bone formation. A trend toward increased volume of osteoid, the organic matrix of bone, was observed, although this was not associated with defects in bone mineralization.4 In another animal study, monkeys fed strontium at high doses for six weeks showed a marked increase in bone strontium content. No harmful effects on bone mineral chemistry or structure occurred.5 At low doses, strontium has been shown to increase the number of bone forming sites in thighbones of adult rats, without adverse effects on the mineral content of bone or mineralization of the organic bone matrix.6 Strontium was shown to reverse bone loss induced by estrogen deficiency in rats.7

Clinical Trials

Human clinical trials have examined the effect of strontium on bone in postmenopausal women. In the dose-ranging (Phase 2) PREVOS trial, women in early menopause were administered strontium ranelate or a placebo for two years. Strontium ranelate was given at daily doses of 125 mg, 500 mg or 1 gram. (Total weight of compound; strontium plus ranelic acid). Compared to women in the placebo group, who lost bone, women on strontium at the 1 gram dose showed statistically significant increases in bone mineral density (BMD) of the hip, thigh and lumbar spine. Biochemical markers of bone formation, such as serum alkaline phosphatase, increased. No effect on markers of bone resorption was observed, leading to the conclusion that strontium ranelate, at the 1 gram daily dose, increased bone formation without decreasing bone resorption proportionally. It was concluded that 1 gram per day is the minimum effective daily dose of strontium ranelate in these women.8

In another Phase 2 trial (STRATOS trial), 353 postmenopausal women with osteoporosis, who had experienced at least one spinal fracture, took strontium ranelate for two years at daily doses of 500 mg, 1 gram or 2 grams. Women on the 2-gram dose showed a significantly greater increase in lumbar spine BMD than those on placebo. The number of subjects who had new spinal deformities was significantly reduced.9 As in the PREVOS trial, serum levels of alkaline phosphatase, a marker of bone formation, increased, while markers of bone resorption (breakdown) decreased. The overall conclusion is that the minimum effective daily dose of strontium ranelate (whole compound) is 1 gram in early postmenopausal non-osteoporotic women and 2 grams in postmenopausal women with osteoporosis.10

Phase 3 efficacy studies on strontium ranelate have been conducted on 1649 subjects in 12 countries. These studies began with an open-run (non-controlled study period in which subjects took calcium and vitamin D supplements to normalize their blood levels of these nutrients.11 Following this, two parallel groups were administered 2 grams daily of strontium ranelate or placebo for 3-years. The subjects continued to take calcium and vitamin D during the study. In subjects on strontium ranelate, BMD increased in the lumbar vertebrae by 14.4 percent and in the thighbone by 8.3 percent. The number and risk of vertebral fractures decreased.12

Safety

Suggested Use: Take two capsules daily. Calcium intake must also be adequate. Do not take this product with calcium supplements.

Strontium ranelate was well-tolerated in the trials discussed above. The incidence of adverse events in subjects on strontium ranelate was statistically equivalent to the placebo groups, and no negative effects on hematology and other biochemical parameters have been observed.

In view of the fact that subjects on the strontium trials also took calcium, and in some cases vitamin D, to maintain normal blood levels of these nutrients, it is important to ensure calcium and vitamin D intakes are adequate when supplementing with strontium. This is underscored by earlier research on animals suggesting that increasing the intake of strontium via diet may demineralize bone when calcium is deficient.13 In rats with chronic kidney failure, strontium has been shown to cause osteomalacia, a condition in which bone is softened due to lack of mineral content. For this reason, people on kidney dialysis should not use strontium supplements.14

Scientific References

1. Shorr E, Carter AC. The usefulness of strontium as an adjuvant to calcium in the remineralization of the skeleton in man. Bull Hosp Joint Dis 1952; 13:59 -66.

2. Dahl SG, Allain P, Marie PJ, et al. Incorporation and distribution of strontium in bone. Bone 2001;28(4):446-53.

3. Baron R, Tsouderos Y. In vitro effects of S12911-2 on osteoclast function and bone marrow macrophage differentiation. Eur J Pharmacol 2002; 450:11-17.

4. Buehler J, Chappuis P, Saffar JL, et al. Strontium ranelate inhibits bone resorption while maintaining bone formation in alveolar bone in monkeys (Macaca fascicularis) Bone 2001;29(2):176-79.

5. Boivin G, Deloffre P, Perrat B, et al. Strontium distribution and interactions with bone mineral in monkey iliac bone after strontium salt (S 12911) administration. J Bone Miner Res. 1996 Sep;11(9):1302-11.

6. Grynpas MD, Hamilton E, Cheung R, et al. Strontium increases vertebral bone volume in rats at a low dose that does not induce detectable mineralization defect. Bone 1996;18(3):253-9.

7. Marie PJ, Hott M, Modrowski D, et al. An uncoupling agent containing strontium prevents bone loss by depressing bone resorption and maintaining bone formation in estrogen-deficient rats. J Bone Miner Res 1993;8(5):607-15.

8. Reginster JY, Deroisy R, Dougados M, et al. Prevention of early postmenopausal bone loss by strontium ranelate: the randomized, two-year, double-masked, dose ranging, placebo-controlled PREVOS trial. Osteoporosis Int 2002; 13:925-31.

9. Meunier PJ, Slosman DO, Delmas PD, et al. Strontium ranelate: dose-dependent effects in established postmenopausal vertebral osteoporosis––a 2-year randomized placebo controlled trial. J Clin Endocrinol Metab 2002;87(5):2060-66.

10. Reginster JY, Meunier PJ. Strontium ranelate phase 2 dose-ranging studies: PREVOS and STRATOS studies. Osteoporosis Int 2003; 14(Suppl 3):S56-S65.

11. Meunier PJ, Reginster JY. Design and methodology of the phase 3 trials for the clinical development of strontium ranelate in the treatment of women with postmenopausal osteoporosis. Osteoporosis Int 2003;14(Suppl 3):S66-76.

12. Meunier PJ, Roux C, Seeman E, et al. The effects of strontium ranelate on the risk of vertebral fracture in women with postmenopausal osteoporosis. N Engl J Med 2004;350(5):459-68. 13. Grynpas MD, Marie PJ. Effects of strontium on bone quality and quantity in rats. Bone 1990;11:313-19.

14. Schrooten, I, Cabrera W, Goodman WG, et al. Strontium causes osteomalacia in chronic renal failure in rats. Kidney Int 1998;54:448-56.

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Date: July 25, 2005 09:56 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: SIDE EFFECTS OF SYNTHETIC PROGESTIN DRUGS

SIDE EFFECTS OF SYNTHETIC PROGESTIN DRUGS

Premarin and Provera are two of the most commonly prescribed progestin drugs and come with a wide variety of side effects and health risks. Over 30 negative side effects are listed for Provera alone. Taking Provera during early pregnancy may actually cause a miscarriage or deformity of the developing fetus. Premarin is comprised of two different types of estrogen called estrone and estradiol, which have been linked with the development of certain kinds of cancer.

The risks involved with taking these synthetic progestins is due to their chemical structures. For the most part, the compound resembles natural progesterone, therefore it binds to the same receptor sites as to natural progesterone. The altered portions of the molecule, however, convey a totally different signal to the cells involved. It is this atomic manipulation which poses alarming health risks to the body. Health risks which are not associated with natural hormonal precursors. A few of the side effects associated with synthetic progestins include:

As is often the case, eventually the perils of synthetically derived plant analogues made health practitioners question their usage and the notion of using progesterone in its natural state has re-emerged. Unfortunately, its classification as a non-patentable simple substance relegates it to the status of an herbal supplement, which most doctors will not endorse. Synthetic drugs are more potent, usually easier to take, have a longer physiologic action and are patentable. For all of these reasons, natural phytomedicines have been shelved as relatively worthless in comparison. Chemically altered progesterone is considered technically superior when in reality, natural forms of progesterone may often be preferable.

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Date: July 15, 2005 12:54 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: SAFETY

SAFETY

The FDA has not given stevia the “generally recognized as safe” label; however, the herbal compound has been used for hundreds of years without any recorded side effects. Japanese studies found that the sweetener consistently yielded a nontoxic status, even after extensive toxicity trials. The Japanese have used stevia for years with the approval of Japanese control agencies, and in Paraguay the herb has enjoyed hundreds of years of consumption with no reports of detrimental side effects. No anomalies have ever been observed in cell, enzyme, chromosomal or other significant physiological parameters during these toxicity tests. Stevia has not been associated with any form of cancer or birth defects. Stevia consumption in Japan was approximated at 170 metric tons in 1987 with no cases of documented side effects (Bonvie, 38).

Scientific Toxicology Studies

Comprehensive and tedious clinical studies in Japan have more than established the fact that stevia can be taken safely. One such study used over 450 rats who were fed stevia for up to two years with doses many times greater than human consumption.

No changes were observed in organ weights, blood biochemistry, growth, appearance, or cellular function (Bonvie, 38). The Japanese have found no indication that stevia affects fertility or unborn children and have never linked it to cancer or other cellular mutations. (NOTE: Diabetics and people with other medical conditions should always consult their physician before using this or any other dietary supplement and should never alter or stop their medication unless advised to by their physician.)

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Date: June 14, 2005 05:23 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: America's Most Wanted

America's Most Wanted

by Brian Amherst Energy Times, January 6, 2000

The United States eats well, a little too well, according to experts. Amply supplied with a large supply of high-calorie food, our diets might seem to be chock full of every conceivable nutrient. Well, to the question "Getting all the right vitamins, minerals and other nutrients?" the most appropriate answer seems to be "Not exactly." Eating a lot doesn't equal eating a lot of the most important vitamins and minerals. So, which vitamins and minerals are likely to show up in short supply in the typical American diet? Calcium certainly sits at the top of list. According to the most recent Continuing Survey of Food Intake by Individuals, which is conducted by the United States Department of Agriculture (USDA), women and girls age 12 and up are not consuming adequate calcium from their diet. Research reveals that about 1200 mg. day suffices for those over age 50 and 1000 mg a day should be adequate if you're between the ages of 19 and 50. Since strong bones are formed during "the first three decades of life," says Laura Bachrach, MD, of Since strong bones are formed during "the first three decades of life," says Laura Bachrach, MD, of Stanford University, ". . .osteoporosis is a pediatric disease." For long-range protection against that bone-weakening disease, kids should eat calcium-rich, low-fat dairy products and plenty of leafy greens (broccoli, cabbage, kale) as well as salmon (with bones), seafood and soy. But the calcium campaign does not end in early adulthood. Bone mass begins to deteriorate at about age 30. Menopausal hormonal changes can exacerbate bone brittleness. Medical conditions, including cancer, liver disease and intestinal disorders; prescription drugs; tobacco and alcohol indulgence; or a decline in activity, especially the weight-bearing kind, also jeopardize bone strength. According to the National Osteoporosis Foundation, about one in every two American women will break a bone after age 50 due to osteoporosis. That translates into about half a million fractured vertebrae and more than 300,000 shattered hips. Frequently, those breaks are life-threatening.

Crucial Calcium

The critical role of calcium in many body functions is perhaps the most extensively clinically documented among nutrients. Researchers in the Department of Medicine, Oregon Health Sciences University in Portland, reviewed epidemiological and clinical studies conducted over the past two years on the relationship between dietary calcium and blood pressure (J Am Coll Nutr October 1999: 398S-405S). "Nearly 20 years of investigation in this area has culminated in remarkable and compelling agreement in the data," the researchers report, "confirming the need for and benefit of regular consumption of the recommended daily levels of dietary calcium." Investigators at the State University of New York, Buffalo School of Dental Medicine, presented results of their studies of calcium and vitamin C and gum disease at the June 26, 1998 meeting of the International Association for Dental Research. Two separate inquiries revealed that people who consumed too little calcium as young adults, and those with low levels of vitamin C in their diets, appear to have nearly twice the risk of developing periodontal disease later in life than folks with higher dietary levels of either nutrient.

Calcium: Much Documented Researchers offer extensive evidence of calcium's benefits on many fronts: n Osteoporosis poses a threat to older men as well as women, according to Randi L. Wolf, PhD, research associate at the University of Pittsburgh Graduate School of Public Health. Dr. Wolf presented her award-winning study to an October 3, 1999 meeting of the American Society for Bone and Mineral Research. Dr. Wolf suggests that men increase their consumption of calcium, particularly after age 80, to avoid age-related declines in the amount of calcium absorbed. According to Dr. Wolf, "It appears that the hormonal form of vitamin D, which is the main regulator of intestinal calcium absorption, may have an important role. We are conducting more research to better understand the reasons for why calcium absorption declines with age in men." n Scientists at Tufts University in Boston did some earlier work on the calcium-vitamin D connection and reported it in the September 4, 1997 New England Journal of Medicine. Using the National Academy of Sciences (NAS) increased recommended daily intake of 1200 milligrams of calcium and 400 to 600 international units of vitamin D for people over 50, the Tufts researchers found that with supplementation of the nutrients, men and women 65 and older lost significantly less body bone and, in some cases, gained bone mineral density. n Two studies published in American Heart Association journals show that atherosclerosis and osteoporosis may be linked by a common problem in the way the body uses calcium. The September 1997 Stroke revealed that, in a group of 30 postmenopausal women 67 to 85 years old, bone mineral density declined as atherosclerotic plaque increased. Researchers reporting in Circulation (September 15, 1997) advanced the theory that the osteoporosis-atherosclerosis connection may be related to a problem in handling calcium. n For people who had colon polyps removed, taking calcium supplements decreased the number of new polyps by 24% and cut the risk of recurrence by 19%, according to researchers at the University of North Carolina, Chapel Hill, School of Medicine. The study, published in the January 14, 1999 New England Journal of Medicine, was a first in crediting calcium with anti-cancer properties.

The D Factor

Without adequate vitamin D, your absorption of calcium slips and bone loss can accelerate, increasing the risk for fractures. Fifty percent of women with osteoporosis hospitalized for hip fractures at Brigham and Women's Hospital in Boston had a previously undetected vitamin D deficiency (Journal of the American Medical Association, April 28, 1999). University of Pittsburgh Cancer Institute researchers told participants at the April 14, 1997 meeting of the American Association for Cancer Research that vitamin D "significantly inhibits highly metastatic, or widespread, prostate cancer in animals," suggesting its potential for treating men with similar conditions. Few foods that Americans eat, except dairy, contain much vitamin D, but we can usually synthesize sufficient amounts from as few as five minutes' exposure to the sun. But as skin ages, its ability to act as a vitamin D factory decreases. According to Michael F. Holick, the director of the Vitamin D, Skin and Bone Research Laboratory at Boston University Medical Center, upwards of 40% of the adult population over age 50 that he sees in his clinic are deficient in vitamin D. Recently, the National Academy of Sciences (the official body that decrees the required amounts of necessary nutrients) increased the daily recommendations of vitamin D to 600 IU for people over 71, 400 IU for those aged 51 to 70 and 200 IU for people under 50. The best dietary sources, apart from dependable supplements, are dairy and fatty fish like salmon. Four ounces of salmon provide about 300 IU.

The Facts About Fats

The American lust for low-fat, high-carbohydrate diets filled with sugary foods has exploded into nothing short of "obsession," according to experts at the General Research Center at Stanford University Medical Center (Am J Clin Nutr 70, 1999: 512S-5S). That mania oftens robs us of the crucial balance of omega-3 and omega-6 fatty acids typical of the Mediterranean diet that protect us from heart disease by controlling cholesterol and making blood less likely to form clots. These fatty acids cannot be made by the body but are critical for health: n Omega-3 fatty acid (linolenic acid) comes from fresh, deepwater fish (salmon, mackerel, sardines) and vegetable oils such as canola, flaxseed and walnut. n Omega-6 fatty acid (linoleic acid) found primarily in raw nuts, seeds and legumes and in saturated vegetable oils such as borage, grape seed, primrose, sesame and soybean. The American Heart Association recommends limiting total fat consumption to 30% of daily calories. Saturated fats like those in dairy and meat products as well as vegetable oil should comprise 10% of total calories; total unsaturated fat (fish oils, soybean, safflower nuts and nut oils) should be restricted to 20 to 22% of daily calories.

Be Sure About B12

Vitamin B12 presents a particular problem for the elderly because older digestive systems often don't secrete enough stomach acid to liberate this nutrient from food. (The elderly have no problem absorbing B12 from supplements, because it's not bound to food.) Vitamins generally moderate the aging process but, ironically, that process and the diseases that frequently accompany it affect vitamin metabolism (Schweiz Rundsch Med Prax 83, 1994: 262-6). And because of those changes, we need more of certain vitamins. This is the case for vitamins D, B6, riboflavin and B12. Crucial for health, B12 is necessary to prevent anemia, and, according to recent studies, needed (along with folate and B6) to help stave off heart disease. B12, with thiamine and niacin, boosts cognition (Adv Nutr Res 7, 1985: 71-100). Screening for vitamin B12 deficiency and thyroid disease is cheap and easy and can prevent conditions such as dementia, depression or irreversible tissue damage (Lakartidningen 94, 1997: 4329-32). In the January 5-12, 1999 issue of Circulation: Journal of the American Heart Association, the AHA urged doctors to screen levels of homocysteine (the amino acid byproduct of protein digestion that damages arteries, causes heart disease and, possibly, strokes) in patients at high risk for heart disease. They also recommended all Americans to up their daily levels of vitamins B6 and B12, as well as folic acid. Since fruits, vegetables or grains lack B12, vegetarians need B12 supplements. And they're a good idea for the rest of us, too.

Folic Acid Benefits

Folic acid made headlines in the early 1990s when the U.S. Public Health Service declared that "to reduce the frequency of neural tube defects [spina bifida, or open spine, and anencephaly, a lethal defect of the brain and skull] and their resulting disability, all women of childbearing age in the United States who are capable of becoming pregnant should consume .4 milligrams (400 micrograms) of folic acid per day." This recommendation followed voluminous research that showed taking folic acid was associated with a significantly reduced risk of birth defects. (The advisory is based on the fact that nearly half of all pregnancies are unplanned. If you think you are pregnant, consult your health practitioner for supplementary advice.)

A Team Player

Folic acid's efficacy intensifies when it works with other nutrients. Among many studies on the preventive powers of folic acid on birth defects, one published in The New England Journal of Medicine (327, Dec. 24, 1992: 1,832-1,835), disclosed an even greater decrease in neural tube defects when supplements of folic acid contained copper, manganese, zinc and vitamin C. As a warrior against homocysteine, folic acid joins the battalion of B12 and B6 in detoxifying this harmful protein. At the University of Washington's Northwest Prevention Effectiveness Center, researchers recently analyzed 38 published studies of the relationship between folic acid, homocysteine and cardiovascular disease and, according to associate professor Shirley A. Beresford, MD, folic acid and vitamin B12 and B6 deficiencies can lead to a buildup of homocysteine.

Compelling Evidence

Canadian researchers reported in the Journal of the American Medical Association (275, 1996: 1893-1896) that men and women with low folic acid have a 69% increase in the risk of fatal coronary heart disease. This 15-year study of more than 5,000 people stressed the need for dietary supplementation of folic acid. Folic acid also has been credited with the potential to protect against cancers of the lungs, colon and cervix. It appears to help reverse cervical dysplasia, the precursor cells to cervical cancer, especially for women taking oral contraceptives, which may cause a localized deficiency of folic acid in the cells of the cervix. According to Shari Lieberman, PhD, and Nancy Bruning, authors of The Real Vitamin & Mineral Book (Avery), folic acid derivatives work with neurotransmitters, the chemicals that permit signals to be sent from nerve fiber to nerve fiber. A lack of folic acid can cause some nervous-system disorders, such as depression, schizophrenia and dementia; it also may be related to some forms of mental retardation. Other supporting roles of folic acid, according to researchers: the formation of normal red blood cells, important for preventing the type of anemia characterized by oversized red blood cells; strengthening and improving white blood cell action against disease; limiting production of uric acid, the cause of gout.

The Best Sources

Many foods are rich in folic acid: beef, lamb, pork and chicken liver, spinach, kale and beet greens, asparagus, broccoli, whole wheat and brewer's yeast. But experts believe that only 25 to 50% of the folic acid in food is bioavailable. Processing also reduces an estimated 50 to 90% of its content. Folic acid supplementation overcomes these obstacles with little risk, as it has no known toxicity. Women taking folic acid who are current or former users of oral contraceptives may require additional zinc. And be sure to augment your folic acid supplement with its synergistic counterpart, vitamin B12.

Focus on Fiber

The American Heart Association came out squarely behind fiber in a June 16, 1997 issue of its journal Circulation: Double your daily intake to lower cholesterol and the risk of heart disease. The American diet is consistently low in fiber, notes Linda Van Horn, PhD, RD, author of the article. Twenty-five to 30 grams a day from foods (or supplements) are not only heart healthy but seem to aid weight control.

Iron Problem

Getting enough iron? An estimated 25% of adolescent girls in the United States are iron deficient, according to an October 12, 1996 issue of the British medical journal The Lancet, which reported that girls who took iron supplements performed significantly better on verbal tests than those who took a placebo. "Teenage girls should be regularly tested for iron deficiency because rapid growth and the onset of menstruation during puberty increase the body's need for iron," says Ann Bruner, MD, of the Johns Hopkins Children's Center and a lead author of the study.USDA data reveal that women up to age 50 also tend to get much less than recommended levels of iron, a lack of which leads to anemia, a deficiency of red blood cells, hemoglobin or volume of blood. For kids, deficiency is more common from six months to four years and during the rapid growth spurts of adolescence when the body is growing so quickly that the body's iron stores may sink to dangerous levels. Vegetarian women run the greatest risk for deficiency, as meat is iron-rich; foods like beans, grains and vegetables also contain some iron. Supplements, of course, supply easily absorbable iron. And to absorb iron from vegetarian sources, take vitamin C with your meals. That boosts the amount of this mineral you will take in. Bear in mind, however, that certain folks-older men and post-menopausal women-generally have adequate dietary supplies of iron. Of greater concern, in fact, is excessive iron, and for these folks iron-free multivitamin and mineral supplements are available.

Ante Up the Antioxidants

Antioxidant nutrients help protect the body from oxygen-scavenging molecules called free radicals. The products of pollution, the body's own metabolic processes and other sources, free radicals are linked to heart disease, cancer and other chronic health problems. The most important antioxidants, which include vitamin C, E, beta carotene, and selenium, are often lacking in the American diet. Plus, optimal amounts of vitamin E cannot be consumed from food. You need supplements. The bottom line: even though we live in a land of plenty, you can still miss vital nutrients. So make sure to consume these vital substances.

Sprouts: Nutritional

Source of Missing Nutrients In the search for the nutrients missing from America's diet, one big help is the sprout. The sprout is truly one of nature's heavyweights: fresh, tiny and moist, its power punch of vitamins, minerals, protein, chlorophyll and disease-busting phytochemicals land it in a weight class far beyond that of its full-grown competitors. Size does NOT matter to this nutritional giant. A championship belt currently wraps around the miniscule broccoli sprout, catapulted into the ring by Paul Talalay, MD, professor of pharmacology and molecular sciences at Johns Hopkins University. Dr. Talalay discovered that the seedlings contain substantially more of the cancer-fighting substance sulforaphane than mature plants (Proc. Natnl. Acad. Sci. USA, 94, 10367-10372). Sprouts, the quintessential health food of the Sixties, provide a wonderfully varied and versatile way to get your daily greens. Raw or cooked, strong or mild, vegetable and grass sprouts and their algae cousins add low-calorie texture to recipes and a rich, diverse complement of nutrients and fiber.

Ancient Asia to the Modern Lab

Asians stir-fried sprouts as one of the earliest fast foods as long as 5,000 years ago. The ancient Chinese relied on sprouts for year-round vegetables in colder regions of their vast country. Today, researchers studying sprouts and adult plants have identified their important chemoprotective and other health-bolstering substances. In Paul Talalay's research project at Johns Hopkins, scientists found that three-day-old broccoli sprouts contain up to 50 times more sulforaphane than mature plants, which prompts the body to produce an enzyme that prevents cancer tumors from forming. Uniform levels of the compound saturate the shoots, unlike the chemically uneven adult plants. The Brassica family of broccoli and cabbage is richly endowed with phytochemicals that also help reduce estrogen levels associated with breast cancer. Other phytochemical compounds in the Brassica family are associated with the prevention of stomach and lung cancers. Most of the initial landmark work on phytochemicals' cancer-fighting powers has taken place since 1989 under the aegis of the National Cancer Institute's "Designer Food Program," which isolated, for example, the isoflavones in beans that seem to neutralize cancer-gene enzymes.

Strong Suit: Soy and Spirulina

The isoflavones and phytosterols in soy produce an estrogenic effect that appears to relieve menopausal symptoms and help prevent breast cancer. Soy foods expert Mark Messina, PhD, has done extensive work on the subject, some of which has been published in the Journal of the National Cancer Institute 83, 1991: 541-6. Researchers also have synthesized a bone-strengthening form of soy isoflavones called ipriflavone, following impressive clinical trials in the treatment of osteoporosis (American Journal of Medicine, 95 [Suppl. 5A] (1993): 69S-74S). Spirulina and other micro-algae are fascinating organisms that inhabit a niche between the plant and animals kingdoms. Named for its tiny spirals, spirulina, a blue-green algae, grows in saline lakes but is cultured for maximum nutritional content. In her book Whole Foods Companion (Chelsea Green), Dianne Onstad notes that spirulina contains "the highest sources of protein, beta carotene and nucleic acids of any animal or plant food." Its nucleic acids, she says, benefit cellular regeneration; its fatty acids, especially GLA and omega-3 acids, make it one of the most complete foods. Sprouts, like any other produce, should be rinsed thoroughly before serving. People at high risk for bacterial illness-young children, the very elderly or folks with weakened immune systems-should limit their consumption of raw sprouts. But no matter how you eat them, you may find more spring in your step from these tiny, sprouting nutritional wonders.

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Vitanet ®

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=352)

Date: June 14, 2005 08:28 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Power Meals - Shakes, smoothies and bars help make getting good nutrition easy.

Power Meals

by Phyllis D. Light, RH Energy Times, March 12, 2004

Choices, choices, choices: For convenience, nutrition and either low-calorie or low-carb dieting, you now have an enviable range of choices. Shakes, smoothies and bars help make getting good nutrition easy.

Whatever your inclination, drinks and bars offer a shortcut to daily nutrition without cooking. And whether you use them as meal replacements, diet aids or healthy snacks, these power meals fill you up without filling you out.

That's the main reason these items have grown in popularity in natural food stores among the nutritionally knowledgeable searching for healthier alternatives to fast food.

No matter how hectic your day, you have no excuses anymore for missing your daily required antioxidants and minerals. Either select a bar suited to your taste, or put your blender or food processor to work in creating drinks that use fresh fruits and veggies, yogurt, low-fat milk or ice and protein powders for maximum nutritional output.

Quality note: always be sure to use organic foods for the best nutritional content, flavor and taste.

Powerful Nutrition

Prepared protein shake mixes and bars are ideal for losing weight, expanding personal energy or building muscle. Protein mixes are available in an assortment of flavors that are generally high in amino acids (protein building blocks) and low in carbohydrates. Of course if you are on a low-carb diet, forsake putting fruits and vegetables in your shakes; these items are too high in carbohydrates.

What's more, bars not only provide a wealth of different tastes, but different bars are also tailored to different needs-whether you're seeking to lose weight, gain muscle or replace a meal, there's a bar out there just for you.

If you use power shakes as meal replacements and you are on a low-carbohydrate diet, make sure the drink supplies plenty of protein and few carbohydrates. If you use either shakes or bars to replace one or more meals during the day, take a fiber supplement in addition. Fiber, which contains no calories, helps speed food through your digestive tract and may lower your risk of heart disease and cancer (Lancet 5/2/03).

And remember: powders and bars should also be low in sugars and saturated fats. The weight-loss benefit: If you drink high-protein shakes or eat bars that taste good and leave you feeling satisfied, you'll have a better chance of sticking to your diet long enough to lose a significant amount of weight.

Drink to Lose

Research into weight loss has established protein shakes and bars as reliable diet aids. A study of 100 dieters between the age of 35 and 65 found that people who drank a daily soy protein shake lost more than 14 pounds each in three months (Eur J Clin Nutr 2003; 57:514). And in a study reported in the Journal of American Dietetic Association (3/01), folks who had a protein shake in place of one daily meal lost almost twice as much weight over 12 weeks than those who ate their regular food with the same amount of calories.

Drinking your breakfast in the form of a protein shake can both increase your metabolism and help curb your appetite for the rest of the day.

Researchers at Harvard University found that metabolism rose faster after eating a high-protein breakfast and that blood-sugar levels stayed high for about six hours after the meal (AHA Annual Conference on Cardiovascular Disease Epidemiology and and Prevention, 3/6/03). In comparison, when a sugary breakfast is consumed, blood-sugar levels rise quickly but fall rapidly, causing fatigue, tiredness and sleepiness.

Protein shakes are especially effective when you are on a weight-loss plateau, trying to lose those last few tenacious pounds. (But shakes, smoothies and bars should not be your only meals of the day. Eat at least one low-calorie meal daily to supply nutrients that may not be in your shakes or bars.)

Smoothie Operator

Made with fruits and vegetables, smoothies are a tasty way of getting extra amounts of nutrients and soluble fiber. Using low-fat milk, yogurt, buttermilk or kefir, plus ice, creates a tempting and wholesome blend that lights up the taste buds. Powdered mixes can be used for added protein.

Fruits and vegetables in your smoothies not only fill you up on relatively few calories, but they boost your energy and supply plenty of bioflavonoids (healthy, natural chemicals from plants), antioxidants, vitamins and minerals.

The fiber in smoothies can help reduce cholesterol, relieve constipation and aid in the prevention of high blood pressure. For reduced calories and added heart health benefits, low-fat or no-fat milk products can be used in place of cream or regular milk in most recipes. For the best taste sensation, combine sour and sweet fruits together.

Adding raw fruits and vegetables to smoothies provides natural enzymes that help with digestion and act as catalysts in hundreds of chemical reactions throughout the body. (You can also take enzymes in supplemental form.) Enzymes are not present in cooked foods since the heat of cooking destroys them.

Nutrition for Kids

If you have trouble getting your children to eat their fruits and vegetables, try giving them smoothies. Children can't resist these naturally sweet and healthy creations.

According to Sally Fallon, author of Nourishing Traditions (New Trends Publishing), smoothies should be "high in quality, contain healthy fats, be naturally sweet, and contain fresh seasonal fruits and vegetables."

Fallon also believes children should consume what are called lacto-fermented foods, including yogurt and kefir, which are aged to contain the kinds of friendly bacteria that normally live within our digestive tracts. For kids, Fallon also encourages the use of cream or cultured milk to ensure adequate fat and calcium, so important for the development of growing bodies.

Smoothies are an interactive drink as far as children are concerned, since they love to help blend them. For extra nutrition power, add nutritional yeast, nut butters or ground flaxseeds. These supply additional vitamins and minerals, along with healthy fats. You can also add silken tofu to bump up the protein content. If your child is lactose intolerant, try mixing smoothies with rice milk, soy milk or juice.

Bars Designed With A Woman's Needs in Mind

The modern woman is a multitasking wonder, constantly juggling work and home responsibilities. So it's no wonder that bars aimed at women are among the most popular bars there are. Many women, in eyeing the bathroom scale, shortchange themselves of the nutrients they need. That's why a woman's bar needs to provide minerals like calcium, a bone-building necessity.

Women also need to ensure that a bar contains enough of the B vitamins, particularly folate. This is especially true if a woman is pregnant, or wants to be: Folate is crucial in helping to prevent neural tube birth defects.

Folate also teams up with two other B vitamins, B6 and B12, to control homocysteine. This protein metabolism byproduct, when present in excessive amounts, is associated with heart disease.

Another popular ingredient in women's bars is soy, which has been duly recognized for its heart benefits. Studies also indicate that soy may help keep bones strong. (Not to mention the fact that the moisture soy holds helps make a bar's texture that much more appealing!)

The Protein Game

If you are unsure about how much protein you need each day, you are not alone. Are you getting too much, not enough, or just enough? Most people need between 45 and 60 grams of protein daily, and most protein shakes contain about 14 and 20 grams of protein per serving (check your labels). No matter what your nutritional needs are, you may find an answer in a smoothie, shake or bar. When it comes to power nutrition, tasting is believing!

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Vitanet ®

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=338)

Date: June 13, 2005 07:43 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Celebrating Women: Age Is Just a Number

Celebrating Women: Age Is Just a Number by Carl Lowe Energy Times, March 10, 2004

As women age, their physical needs shift. The health challenges that face a woman in her thirties do not match those of a woman in her fifties.

At the same time, some basic health needs stay constant: At any age, every woman requires a wealth of vitamins, minerals and the other natural chemicals that fruits, vegetables and supplements supply. She also constantly needs families and friends to support her spiritual health.

As the internal workings of your body alter, your lifestyle must stay abreast of those adjustments. Peak health demands a finely tuned health program designed with your individual needs-and your stage of life-in mind.

Ages 30 to 45

When it comes to maintaining health, younger women might seem to have it easier than older women. If they exercise and stay in shape, they maintain more stamina than women 10 to 20 years their senior.

Unfortunately, many women in this age group mistakenly think they don't have to be as careful about their lifestyle habits and their eating habits as they will in later decades. But even if your health doesn't seem to suffer from poor eating choices or a sedentary lifestyle right away, your foundation for health in later life suffers if you don't care for yourself now.

By age 45 you should have established the good habits that will carry you successfully through the aging process. As an added bonus, good lifestyle habits pay immediate dividends. If you pay attention to your nutrients and get plenty of physical activity when younger, you'll feel more energetic and probably enjoy better emotional health.

Set Health Goals

According to Gayle Reichler, MS, RD, CDN, in her book Active Wellness (Avery/Penguin), good health at any age doesn't just come to you-you have to plan for it. In order to stick to good habits, she says, "living a healthy lifestyle needs to be satisfying." Reichler believes that you need to picture your health goals to achieve them: "Every successful endeavor first begins in the mind as an idea, a thought, a dream, a conviction." Good health at this age and in later years requires a concrete strategy and visualization of how your body can improve with a healthy lifestyle.

Your long-term health goals at this age should include an exercise program that will allow you to reach a physically fit old age with a lowered risk of disability. In addition, your short-term plans should encompass losing weight, staying optimistic, living life with more vim and vigor, increasing your capacity for exercise and lowering your stress.

As Reichler points out, "Your long-term goal and your ideal vision establish what you want to achieve....[You should do] something good...for yourself every day and every week that makes your life easier and more consistent with your goals."

Develop an Eating Plan

Today, the average American gains about two pounds annually. As a result, every year a greater portion of the US population is obese and overweight. By controlling your food intake earlier in life, you may be able to avoid this weight gain. In his book Prolonging Health (Hampton Roads), James Williams, OMD, recommends basic changes to your diet that can provide long-term support of your health:

Get Supplemental Help

If you're in your thirties or forties and you don't take at least a multivitamin, start taking one today! A large body of research shows that taking vitamin and mineral supplements over a long period of time significantly supports better health.

Calcium and vitamin D are two of the most important supplemental nutrients, helping to build stronger bones now that can withstand the bone-loss effects of aging.

Calcium can also help keep your weight down. One study of younger women found that for every extra 300 milligrams of calcium a day they consumed, they weighed about two pounds less (Experimental Biology 2003 meeting, San Diego).

In the same way, taking vitamin D supplements not only helps strengthen your bones, it can also lower your risk of multiple sclerosis (Neurology 1/13/04). In this study, which looked at the health records of more than 180,000 women for up to 20 years, taking D supplements dropped the chances of multiple sclerosis (although eating vitamin D-rich foods did not have the same benefit). And if you're thinking about having children at this age, a multivitamin is crucial for lowering your baby's risk of birth defects and other health problems. A study at the University of North Carolina at Chapel Hill found that women who take multivitamins during pregnancy lower their children's risk of nervous system cancer by up to 40% (Epidemiology 9/02).

" Our finding, combined with previous work on reducing several birth defects with vitamin supplementation and other childhood cancers, supports the recommendation that mothers' vitamin use before and during pregnancy may benefit their babies' health," says Andrew F. Olshan, MD, professor of epidemiology at the UNC School of Public Health. "We believe physicians and other health care providers should continue to educate women about these benefits and recommend appropriate dietary habits and daily dietary supplements."

In particular, Dr. Olshan feels that folic acid (one of the B vitamins), and vitamins C and A, are particularly important for lowering the risk of childhood cancers and birth defects.

Ages 45 to 55

When you reach this in-between age-the time when most women have moved past childbearing age but haven't usually fully moved into the post-menopausal stage-you enjoy a propitious opportunity to take stock of your health and plan for an even healthier future. One thing that may need adjustment is your sleep habits, as sleeplessness is a common problem for women in this age group. Even if you haven't been exercising or watching your diet until now, it's not too late to start. Making lifestyle changes at this age can still improve your chances for aging successfully.

For instance, it is at these ages that women should have their heart health checked. Research published in the journal Stroke (5/01) shows that having your cholesterol and blood pressure checked at this time more accurately shows your future chances of heart disease than having it checked at a later date after menopause, in your late fifties.

" The premenopausal risk factors may be a stronger predictor of carotid atherosclerosis [artery blockages] because they represent cumulative risk factor exposure during the premenopausal years, whereas the risk factors...during the early postmenopausal years have a shorter time for influence," says Karen A. Matthews, PhD, a professor at the University of Pittsburgh Medical Center. In other words, Dr. Matthews' research shows that if you have high blood pressure and high cholesterol before menopause, you are at serious risk for a stroke or heart attack soon after menopause: These are important reasons that you need to start improving your health habits immediately.

Increase in Heart Disease

Before menopause, a woman's hormones and other physiological characteristics usually hold down her chance of heart disease. After menopause, when hormones and other bodily changes occur, the risk of heart attacks and stroke in women rises significantly. (Heart disease is the leading killer of women.) At least part of this increased risk is linked to the postmenopausal decrease in estrogen production.

Dr. Matthews studied about 370 women in their late forties, measuring their weight, their BMI (body mass index, an indication of body fat compared to height), blood pressure, cholesterol and blood sugar. Ten years later, after the women had entered menopause, she and her fellow scientists used ultrasound to measure blockages in these women's neck arteries (a sign of heart disease).

The researchers found that indications of potential heart problems (such as high blood pressure, high cholesterol and being overweight) when women were in their forties did indeed forecast future difficulties.

" Women who had elevated cholesterol, higher blood pressures and increased body weight before menopause had increased blood vessel thickening and atherosclerotic plaque formation in the neck arteries after menopause. Such changes in the carotid arteries are associated with an increased heart attack and stroke risk," says Dr. Matthews.

Heart Health Factors

The four main lifestyle factors you should adjust at this age to support better heart function are diet, stress, exercise and weight. According to Dr. James Williams, "[M]ore than any other cause, dietary factors are the most critical factor in cardiovascular disease." He recommends eliminating "dietary saturated fatty acids as found in flame-broiled and fried meats." He also urges women to eat more fish and poultry, consume organic fruits and vegetables and cut back on refined sugar.

Stress becomes an ever more important heart disease factor at this age as estrogen begins to drop.

" Our study [in the lab] indicates that stress affects estrogen levels and can lead to the development of heart disease-even before menopause," says Jay Kaplan, PhD, of the Wake Forest University Baptist Medical Center (The Green Journal 3/02).

Dr. Kaplan's research shows that stress in women ages 45 to 55 may reduce estrogen earlier in life and make women more susceptible to the arterial blockages that lead to heart disease. "We know from [lab] studies that stress can lower estrogen levels to the point that health is affected," he says.

Stress can also hurt bone health: In a study of 66 women with normal-length menstrual periods, estrogen levels were low enough in half of the women to cause bone loss, making the women susceptible to osteoporosis.

Exercise and Weight

Although exercise used to be considered to be mainly a young woman's activity, the thrust of recent research suggests that physical activity actually becomes more important to health as you get older.

A 17-year study of about 10,000 Americans found that exercising and keeping your weight down is probably the most important thing you can do to lower your risk of heart disease as you enter your forties and fifties (Am J Prev Med 11/03).

Of the people who took part in this study, more than 1,500 people died of heart disease. Those who performed the most exercise were thinner and had a 50% chance less of dying of heart disease than overweight nonexercisers.

" The fact is that those who both exercised more and ate more nevertheless had low cardiovascular mortality," says Jing Fang, MD, a researcher at the Albert Einstein College of Medicine in the Bronx, New York.

An added benefit of exercise: If you burn up calories exercising, you can eat more and not have to worry as much about being overweight.

Supplements and Diet

If you're a woman at midlife, a multivitamin and mineral is still good nutritional insurance. Eating plenty of fruits and vegetables are also important for getting enough phytochemicals, the health substances in plants that convey a wealth of health benefits.

As you enter this age group, your immune system gradually slows down. To help support immune function, eating produce rich in antioxidant nutrients, and supplementing with antioxidants like vitamins C and E as well as carotenoids, can be especially important. For example, a study of people with ulcers found that people with less vitamin C in their stomachs are more likely to be infected with Helicobacter pylori, the bacteria that can cause peptic ulcers and is linked to stomach cancer (J Amer Coll Nutr 8/1/03).

This research, which looked at the health of about 7,000 people, found that vitamin C probably helps the immune system fend off this bacterial infection.

" Current public health recommendations for Americans are to eat five or more servings of fresh fruits and vegetables a day to help prevent heart disease, cancer and other chronic diseases," says Joel A. Simon, MD, MPH, professor of medicine at the University of California at San Francisco.

Calcium and Bones

At midlife, calcium continues to be a vital mineral for supporting bone health.

According to Gameil T. Fouad, PhD, "It has been routinely shown that a woman's calcium status and level of physical activity (specifically, the degree to which she participates in weight-bearing exercise) are positively associated with bone mineral density. It is less well appreciated that this is a process which takes place over the course of a lifetime."

Dr. Fouad adds that calcium works in concert with other vitamins and minerals to keep bones healthy: "Research in the United Kingdom involving nearly 1,000 premenopausal women over age 40 illustrates those women with the highest bone density tended to have the highest intake of calcium. Surprisingly, this study also demonstrated that calcium does not act alone: those women with the best bone health also had the highest intakes of zinc, magnesium and potassium."

Dr. Fouad stresses that supplements should go together with a lifestyle that includes enough sleep and exercise to help the body stay in top shape.

" As a general guideline," he says, "a woman concerned with her mineral intake should take concrete steps to make sure she is getting adequate rest, is eating a well-balanced diet focused on fresh fruits, vegetables and lean protein as well as getting adequate exercise....A multi-mineral containing bio-available forms of zinc, magnesium, copper and selenium is probably a safe addition to anyone's routine. Taking these proactive steps dramatically reduces the chances that deficiencies will arise."

Ages 55 and Beyond

Entering the post-menopausal phase of life can present challenging opportunities for a new perspective on life and health. While some signs of aging are inevitable, experts who have looked at how the human body changes with age are now convinced that healthy lifestyle habits can improve how well you can think, move and enjoy life well past age 55.

As Dr. Williams notes, "In your fifties, the force of aging is undeniably present: Your body shape changes and organ function declines, both men and women have a tendency to gain weight....Heart disease becomes more common, energy and endurance are considerably reduced and your memory begins to slip."

But Dr. Williams also points out that you don't have to age as rapidly as other people do. He believes you should employ a "natural longevity program...[that starts] to reverse the course of aging as early as possible."

One key to staying vital as you age is your outlook on life, an aspect of life that's greatly enhanced by strong social ties.

Avoiding the Aging Slowdown The latest research shows that one of the most crucial ways to slow the effects of aging is to exercise and keep your weight down. It won't necessarily be easy, though. The change in hormonal balance at this age makes the body more prone to extra pounds (Society for Neuroscience Meeting, 11/12/03).

" In women, it has been demonstrated that major weight increases often occur during menopause, the time in a woman's life in which cyclic ovarian function ends and the ovarian hormones estrogen and progesterone decline," says Judy Cameron, PhD, a scientist in the divisions of reproductive sciences and neuroscience at the Oregon Health & Science University.

In Dr. Cameron's lab trials, she has found that the decrease in estrogen after menopause "resulted in a 67% jump in food intake and a 5% jump in weight in a matter of weeks."

In other words, the hormonal changes you undergo as enter your late fifties causes your appetite to grow as well as your waistline: Developments that increase your chances of heart disease, cancer, diabetes, stroke and joint problems.

Vigilance against this weight gain is necessary to save your health: Start walking and exercising. Research on exercise in people aged 58 to 78 found that getting off the couch for a walk or other physical activity not only helps control weight but also helps sharpen your thinking and helps you become more decisive (Proceedings of the National Academy of Sciences, 2/16-20/04, online edition). This recent study, done at the University of Illinois at Urbana-Champaign, found that performing aerobic exercise improved mental functioning by 11% (on a computer test).

" We continue to find a number of cognitive benefits in the aerobic group," says Arthur F. Kramer, PhD, a professor of psychology at the Beckman Institute for Advanced Science and Technology at Illinois. "The brain circuits that underlie our ability to think-in this case to attend selectively to information in the environment-can change in a way that is conducive to better performance on tasks as a result of fitness." In simple terms, that means that walking at least 45 minutes a day boosts brain power as well as protecting your heart.

An Herb for Menopause

The physical changes that accompan> y menopause can be uncomfortable. But traditional herbal help is available: Black cohosh (Cimicifuga racemosa), an herb used for eons by aging women, has been shown in recent studies to be both safe and effective (Menopause 6/15/03).

" This [research] should reassure health professionals that they can safely recommend black cohosh to their menopausal patients who cannot or choose not to take HRT [hormone replacement therapy]," says researcher Tieraona Low Dog, MD, Clinical Assistant Professor at the University of New Mexico Department of Family and Community Medicine.

While HRT has been used to help women cope with menopause, a flurry of studies in the past few years have shown that HRT increases the risk of heart disease and cancer. Instead, black cohosh, which alleviates such menopausal discomforts as hot flashes, has been shown to be much safer.

Keeping Track of Crucial Vitamins

While continuing to take multivitamins and minerals at this age is important, some experts believe that as we grow older, vitamin D supplementation, as well as taking antioxidant nutrients, is particularly vital. Arthritis is a common affliction of aging, and rheumatoid arthritis (RA) is one particularly destructive form of this joint problem. But taking vitamin D can significantly lower your risk of this condition.

When scientists analyzed the diets of 30,000 middle-aged women in Iowa over 11 years, they found that women who consumed vitamin D supplements were 34% less likely to suffer RA (Arth Rheu 1/03).

Other vitamins are equally important to an older woman's well-being. For example, vitamins C and natural E have been found to lower the risk of stroke in those over the age of 55 (Neurology 11/11/03). In this study, smokers who consumed the most vitamin C and natural vitamin E were 70% were much less likely to suffer strokes than smokers whose diets were missing out on these vitamins.

Rich sources of vitamin C in food include oranges and other citrus fruits, strawberries, red and green peppers, broccoli and brussels sprouts. Sources of vitamin E include vegetable oils such as sunflower seed, cottonseed, safflower, palm and wheat germ oils, margarine and nuts.

Saving Your Sight

After age 55, your eyes are particularly vulnerable. Eight million Americans of this age are at risk for age-related macular degeneration (AMD), a condition that destroys structures in the back of the eye necessary for vision (Arch Ophthal 11/03). But you can drop your risk of AMD by taking supplements of antioxidant vitamins and zinc, according to researchers at Johns Hopkins' Wilmer Eye Institute.

Their research shows that a dietary supplement of vitamins C, natural vitamin E and beta carotene, along with zinc, lowers the chances of progressing to advanced AMD in certain at-risk people by about 25%. Daily supplements also reduced the risk of vision loss by about 19%.

The carotenoids lutein and zeaxanthin also help protect aging eyes. When scientists compared healthy eyes with eyes suffering from AMD, they found that AMD eyes contained lower levels of these vital nutrients (Ophthalmology 2003; 109:1780). Furthermore, they found that levels of these chemicals generally decline as you grow older.

Healthy at All Ages

When it comes to designing a healthy lifestyle, general rules like these can be followed, but you should individualize your plan to fit your needs. No matter which type of exercises you pick out or what healthy foods you choose, look for a strategy and a plan you can stick to. If you think a selection of foods are good for you but you absolutely hate their taste, chances are you won't be able to stick to a diet that includes them.

The same goes for exercise: Pick out activities that you enjoy and that you can perform consistently. That increases your chance of sticking to an exercise program.

Staying healthy is enjoyable and it helps you get more out of life every day, no matter what stage of life you're in.

--
Vitanet ®

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=335)

Date: June 12, 2005 06:02 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Hidden In Plain Sight - The spreading epidemic: Diabetes.

Hidden In Plain Sight by Carl Lowe Energy Times, October 7, 2003

Today, a devastating disease is striking millions of Americans. Sixteen million Americans already have this disease, and every day another 2,200 Americans learn they have it. The spreading epidemic: Diabetes.

The potential ramifications: Millions of people more susceptible to heart disease, dementia, infections, amputations and blindness. Lowering your risk for diabetes is relatively simple and terribly important. Because dealing with some of its effects once you are its victim can be much more complicated.

Signs of Trouble

"Approximately one in four individuals over the age of 60 has type 2 diabetes, which is a remarkable statistic," says Gerald Shulman, MD, of the Howard Hughes Medical Institute at Yale University. "And, if you add impaired glucose tolerance [a condition that often leads to diabetes], you're talking about 40% of the population."

The economic burden of this epidemic is staggering, estimated at about $100 billion a year and growing.

If you never exercise, carry around a substantial amount of stomach fat and have seen your weight climb significantly over the years, you are among the people at higher risk for diabetes.

These lifestyle habits eventually render your body unable to efficiently process blood sugar. In technical terms, researchers investigating how the body uses and misuses blood sugar have identified what they have called "syndrome X" or "metabolic syndrome," a condition that puts you at high risk for both diabetes and heart disease.

If you have three or more of the following signs, you now have metabolic syndrome and, unless you change the way you live, may eventually suffer diabetes (Circulation 7/14/03):

* Fat around your middle

* High blood pressure

* High triglycerides (blood fats)

* Low level of HDL ("good" cholesterol)

* High fasting blood sugar

In a study of more than 6,000 men in Scotland, having three of these metabolic problems almost doubled the risk of heart disease and more than tripled the risk of diabetes. If you have four of these risk factors, your risk of heart disease just about quadruples, and your diabetes risk skyrockets almost 25 times.

Insulin Resistance

The cells in your body get the energy they need to survive when they take sugar out of your blood and oxidize it along with fatty acids. Normally, insulin, a hormone-like substance released by the pancreas, speeds the absorption of blood sugar by the cells. When your pancreas cannot make insulin at all or makes too little, you suffer what is called type 1 or juvenile diabetes. This condition is usually treated by taking insulin.

But if your pancreas secretes what should be enough insulin for glucose absorption, and your cells are still unable to take sufficient sugar from your blood, you have what is called type 2 or adult-onset diabetes.

Understanding exactly why cells develop difficulties in taking sugar out of the blood and using it for energy has long troubled medical investigators. This condition, before it develops into full-blown diabetes, is called insulin resistance. Researchers have now linked it to malfunctioning mitochondria, the little structures in cells that make the energy that keeps cells functioning.

Scientists have long known that, as you age, you become more susceptible to diabetes. And when researchers compare the mitochondria in young people with those found in the cells of the elderly, they find that older mitochondria are more sluggish.

Making Energy

The mitochondria within the cells oxidize glucose and fatty acids to make energy. (They accomplish this in a complicated metabolic action called the Krebs cycle.) Difficulty with this process, or insulin resistance, can occur when fat and fatty acid waste products accumulate in your liver and muscle tissue.

"We hypothesized that there were two routes to this type of fat accumulation," says Dr. Shulman. "One is that the fat cells might release more fatty acids to be delivered to muscles and/or defects in mitochondrial oxidation might then lead to the accumulation of these fatty acids."

Research confirms that fatty molecules probably collect in muscle cells because the mitochondria's ability to burn fat breaks down over the years. On average, mitochondrial activity dips about 40% in older people.

Dr. Shulman thinks that the final coup de grace in the development of diabetes from insulin resistance takes place when the mitochondria malfunction in the insulin-producing cells of the pancreas.

Although Dr. Shulman says that more research is needed to understand why mitochondrial function slips with age, he recommends keeping your mitochondria from slacking off by exercising. Studies now show that regular physical activity can probably increase the mitochondria in your muscles by activating release of an enzyme called AMP kinase. "...an encouraging note in this study is that-since we've shown that exercise leads to more mitochondria by activation of [the enzyme] AMP kinase-by staying active, the elderly might...maintain mitochondrial content and head off such health problems," says Dr. Shulman. "This is yet another reason for seniors to maintain an active lifestyle," he adds.

Maitake for Metabolic Syndrome

Another natural way to fight the metabolic syndrome is with an extract of the maitake mushroom (Grifola frondosa). The extract, called sx-fraction, is attracting research investigating its ability to help the body manage blood sugar more efficiently. In one study, five people with diabetes improved their blood sugar levels with sx-fraction (Diab Med 2001; 18).

This research found that taking maitake sx-fraction is often accompanied by drops in blood glucose levels ranging from 30% to 63%. According to Mark Kaylor, PhD and Ken Babal, CN, in Syndrome X and SX-Fraction (Woodland), "...Studies have demonstrated that whole maitake or its fractions are potent agents for improving 'diabetic conditions.'"

Take the Whole Grains Home

Eating a daily dish of whole grains, like whole wheat and brown rice, can also reduce your risk of diabetes (AJCN 8/22/03). In a twelve-year study of more than 40,000 men between the ages of 40 and 75, researchers found that those who ate three servings of whole grains a day cut their risk in half.

The researchers found that even overweight people lowered their chances of diabetes by eating whole grains and exercising.

Consuming more magnesium also helped; whole grains contain amounts of this mineral missing in refined-grain foodstuffs. Magnesium improves insulin response.

In an age of junk food, our simple taste for sugar and refined grains may threaten our health. Yet, your defense against this scourge is no further away than simply eating more fibrous foods and going for a simple, everyday walk.

--
Vitanet ®

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=316)

Date: June 03, 2005 06:23 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Mother's Choice with Iron - Scientific Prenatal Nutrition!

Mothers Choice with Iron PreNatal Nutrition

You’re expecting a baby—and right now nothing could be more important than ensuring the health of your developing child. At this crucial time, what could be more basic than providing the nutrients that are the very substance of the new life you’re carrying? At every critical stage of pregnancy, your baby’s cells and tissues are literally formed from the nutrients you take in. Source Naturals is deeply committed to giving your newborn every chance for optimal health. That’s why we developed MOTHER’S CHOICE Prenatal Multiple. MOTHER’S CHOICE combines a comprehensive vitamin-mineral blend with advanced nutrients that reflect the latest scientific research. And each bottle comes with a separate package of Arctic Pure™ DHA softgels. DHA is a fatty acid that is crucial for baby’s brain development from the earliest stages of pregnancy through the breastfeeding years. MOTHER’S CHOICE also supports your health and vitality, with a blend of traditional herbs used for centuries to relieve morning sickness and leg edema. MOTHER’S CHOICE: because nothing is too good for you and your baby.

Go the Source for Scientifically Based Formulation

MOTHER’S CHOICE PRENATAL MULTIPLE was expertly formulated to supply a full range of essential vitamins and minerals, in potencies effective for maternal health and fetal development, while safe for the fetus.

Healthy Fetal Development

MOTHER’S CHOICE contains ingredients that reflect the latest findings in fetal nutrition.

Enjoy Your Special Time!

Pregnancy should be one of the high points of your life, but typical discomforts can get in the way. MOTHER’S CHOICE features herbs traditionally used during pregnancy. Morning Sickness: Ginger root and peppermint leaf are traditional remedies for the nausea associated with morning sickness, and chamomile has soothing properties. Leg Comfort: Vitamin E has been shown to relieve nocturnal leg cramps, while bilberry supports healthy capillaries and veins.

Take Charge of Your Pregnancy

Source Naturals understands your deep desire to safeguard your baby’s health and development. With MOTHER’S CHOICE you have the resources to act on that concern. MOTHER’S CHOICE: for a vibrant pregnancy and a good start on life for your newborn.

CAUTION: Pregnant or breastfeeding women should consult a health care professional before using this or any dietary supplement.

--
VitaNet ®
VitaNet ® Staff

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=175)

Date: May 19, 2005 09:29 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: KudZu, Treatment of alcohol dependence or alcohol abuse

For millennia, folk medicines have been used to treat ‘‘alcohol addiction’’ in China. A thorough literature search of the ancient Chinese pharmacopoeias revealed a long list of traditional remedies, including the 16 ‘‘stop-drinking’’ formulae of Sun Simiao (ca. 600 AD) and the ‘‘anti-alcohol addiction’’ formula of Li Dongyuan (ca. 1200 AD), 2 of the most reputed ‘‘medical doctors’’ in the history of Traditional Chinese Medicine. However, like those discovered by the ancient Romans,11 most of the ancient Chinese remedies for ‘‘alcohol addiction’’ were based on psychological aversion: to deter patients from further drinking by associating alcohol drinking with an unpleasant experience. Interestingly, as time went by, treatments based solely on psychological aversion were gradually eliminated from the ancient Chinese pharmacopoeias, presumably because of their ineffectiveness and/or undesirable side effects. The only remedies that have survived this historical trial-anderror scrutiny are those consisting the root (Radix puerariae, RP) or flower (Flos puerariae, FP) of Pueraria lobata (a medicinal plant known to the West as kudzu). It was on the basis of this historical backdrop, we initiated the search of safe and efficacious anti-dipsotropic (alcohol intake suppressive) agents from RP. This approach has led to the discovery of daidzin,12 an isoflavone that has since been shown to reduce alcohol drinking in all alcohol preferring animal models tested to date.

Alcohol abuse

Alcohol abuse and alcohol dependence (i.e., alcoholism) are serious public health problems of modern society. In the United States alone, an estimated 13 million adults exhibit symptoms of alcohol dependence due to excessive alcohol intake, and an additional 7 million abuse alcohol without showing symptoms of dependence according to U.S. Government projections from studies conducted in the mid-1980s. Alcohol dependence and abuse are very expensive: in economic and medical terms, it will cost the U.S. well over $200 billion in 1991 with no prospect of falling or leveling off. The social and psychological damages inflicted on individuals as a consequence of alcohol abuse, e.g., children born with fetal alcohol syndrome (FAS) and victims of alcohol-related accidental death, homicide, suicide, etc., are immense.

While it is generally accepted that alcoholism and alcohol abuse are afflictions with staggering international economic, social, medical, and psychological repercussions, success in preventing or otherwise ameliorating the consequences of these problems has been an elusive goal. Only very recently the public view that alcoholism and alcohol abuse are remediable solely by moral imperatives has been changed to include an awareness of alcoholism and alcohol abuse as physiological aberrations whose etiology may be understood and for which therapy may be found through scientific pursuits. Both alcohol abuse and dependence arise as a result of different, complex, and as yet incompletely understood processes. At present, alcohol research is in the mainstream of scientific efforts.

Our studies on alcohol (ethanol or ethyl alcohol) have been based on the hypothesis that its abuse can ultimately be understood and dealt with at the molecular level. Such a molecular understanding, if achieved, would provide a basis for the identification and development of appropriate therapeutic agents. Our view hypothesizes that the clinical manifestations of alcoholism and alcohol abuse are the consequence of aberrations or defects within one or more metabolic pathways, affected by the presence of ethyl alcohol. In order to test this hypothesis, our initial studies focused on physical, chemical, and enzymatic properties of human alcohol dehydrogenase (ADH), the enzyme that catalyzes alcohol oxidation according to the following reaction formula:

CH.sub.3 CH.sub.2 OH+NAD.sup.+ .fwdarw.CH.sub.3 CHO+NADH

In addition, our studies more recently have focused on the aldehyde dehydrogenases (ALDH) which catalyze the subsequent step in the major pathway of ethanol metabolism according to the following reaction formula:

CH.sub.3 CHO+NAD.sup.+ .fwdarw.CH.sub.3 COOH+NADH

Prior to our research (for example, see Blair and Vallee, 1966, Biochemistry 5:2026-2034), ADH in man was thought to exist in but one or two forms, primarily in the liver, where it was considered the exclusive enzyme for the metabolism of ethanol. Currently, four different classes of ADH encompassing over twenty ADH isozymes have been identified and isolated from human tissues. There is no reason to believe that all of these ADH isozymes are necessary to catalyze the metabolism of a single molecule, ethanol, even though all of them can interact with it. We have proposed that the normal function of these isozymes is to metabolize other types of alcohols that participate in critical, physiologically important processes, and that ethanol interferes with their function (Vallee, 1966, Therapeutic Notes 14:71-74). Further, we predicted that individual differences in alcohol tolerance might well be based on both qualitative and quantitative differences in isozyme endowment (Vallee, 1966, supra).

Our research has established the structures, properties, tissue distribution, and developmental changes for most of the ADH isozymes, which while structurally quite similar, and presumed to have evolved from a common precursor, are functionally remarkably varied. Of the more than 120 publications from our laboratory that relate to the above subjects, the following, arranged in six categories, are especially useful for instruction in the prior art.