AMERICAN GINSENG

EVEN EXERCISE HAS ITS PERILS

Exercising, as beneficial as it is, can initiate the release of free radicals within our cellular systems. Aerobic exercising produces oxidation products. Many of these compounds are not neutralized by our internal safety mechanisms and an overload can occur. Supplementing the diet with efficient antioxidants is highly recommended for eve ryone, but especially for those who exercise on a regular basis.

WHY ARE FREE RADICALS SO DANGEROUS

A free radical can destroy a protein, an enzyme or even a complete cell. To make matte rs wo rse, free radicals can multiply through a chain reaction mechanism resulting in the release of thousands of cellular oxidants. When this happens, cells can become so badly damaged that DNA codes can be altered and immunity can be compromised.

Contact with a free radical or oxidant on this scale can create cellular deterioration, resulting in cancer and heart disease. Tissue breakdown from this oxidative stress can also occur which can contribute to aging, arthritis and whole host of other degenerative conditions. “Through free radical reactions in our body, it’s as though we’re being irradiated at low levels all the time. They grind us down.”3

PREMATURE AGING AND FREE RADICALS:

Frequently, the oxidative stress caused by free radicals results in what we refer to as the aging process. While aging is inevitable, many of us hasten its outcome by not protecting ourselves, hence, we age prematurely. The early onset of wrinkling, arthritis, circulatory disorders, diabetes, heart disease and hardening of the arteries can result from free radical damage that could have been minimized by consistently taking strong antioxidants like Pycnogenol. More and more research suggests that it is a lack of certain protective nutrients, like the bioflavonoid compounds contained in Pycnogenol, which increases our risk of cancer and other degenerative diseases.4

WHY A NUTRITIOUS DIET DOES NOT AFFORD US ENOUGH PROTECTION

“They (antioxidants) may be much more important that doctors thought in warding off cancer, heart disease and the ravages of aging—and, no, you may not be getting enough of these nutrients in your diet.”5

Clearly, while diet modifications are invaluable, diet alone cannot provide the kind of physiological defense the body requires to inhibit free radicals before they cause biological harm. While there is no way to escape our exposure to free radicals, we can minimize potential cellular destruction by reducing their numbers.

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Date: July 13, 2005 09:24 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Pain - Post Op and Relaxation

Relaxation, Music Reduce Post-Op Pain. New research has found that relaxation and music, separately or together, significantly reduce patients' pain following major abdominal surgery. The study, published in the May issue of the journal Pain, found that these methods reduce pain more than pain medication alone. Led by Marion Good, PhD, RN, of Frances Payne Bolton School of Nursing, Case Western Reserve University, Cleveland, Ohio, the study is supported by the National Institute of Nursing Research (NINR), at the National Institutes of Health. "This is important news for the millions of Americans who undergo surgery and experience postoperative pain each year," said Dr. Patricia A. Grady, director of the NINR.

"Better pain management can reduce hospital stays and speed recovery, ultimately improving patients' quality of life." Dr. Good and her research team studied three groups of patients undergoing abdominal surgery. In addition to the usual pain medication, one group used a jaw relaxation technique, another group listened to music, and a third group received a combination of relaxation and music.

Findings revealed that, after surgery, the three treatment groups had significantly less pain than the control group, which received only pain medication. "Both medication and self-care methods which involve patient participation are needed for relief," said Dr. Good.

"These relaxation and music self-care methods provide more complete relief without the undesired side effects of some pain medications." The findings have important implications for the 23 million people who undergo surgery and experience postoperative pain annually in the United States. Pain can hamper recovery by heightening the body's response to the stress of surgery and increasing tissue breakdown, coagulation and fluid retention. Pain also interferes with appetite and sleep and can lead to complications that prolong hospitalization.

Dr. Good and her research staff worked with 500 patients aged 18-70, who were undergoing gynecological, gastrointestinal, exploratory or urinary surgery. Prior to surgery, those in the music, relaxation or combination groups practiced the techniques. The relaxation technique consisted of letting the lower jaw drop slightly, softening the lips, resting the tongue in the bottom of the mouth, and breathing slowly and rhythmically with a three-rhythm pattern of inhale, exhale and rest. Patients in the music group chose one of five kinds of soothing music--harp, piano, synthesizer, orchestral or slow jazz.

On the first and second days after surgery, all patients received morphine or Demerol for pain relief by pressing a button connected to their intravenous patient controlled analgesia pumps. The groups receiving the additional intervention used earphones to listen to music and relaxation tapes during walking and rest, while the control group did not. The research team measured the patients' pain before and after 15 minutes of bed rest and four times during walking to see if the sensation and distress of pain changed.

Dr. Good found that during these two days postsurgery the three treatment groups had significantly less pain than the control group during both walking and rest. "Patients can take more control of their postoperative pain using these self-care methods," says Dr. Good. "Nurses and physicians preparing patients for surgery and caring for them afterwards should encourage patients to use relaxation and music to enhance the effectiveness of pain medication and hasten recovery."

Dr. Good's findings have implications for future research into the effectiveness of self-care methods on other types of pain, including chronic pain, cancer pain, and pain of the critically ill.

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Vitamin D Lack Linked to Hip Fracture. Vitamin D deficiency in post-menopausal women is associated with increased risk of hip fracture, according to investigators at Brigham and Women's Hospital in Boston, Mass. In a group of women with osteoporosis hospitalized for hip fracture, 50 percent were found to have a previously undetected vitamin D deficiency. In the control group, women who had not suffered a hip fracture but who were hospitalized for an elective hip replacement, only a very small percentage had vitamin D deficiency, although one-fourth of those women also had osteoporosis. These findings were reported in the April 28, 1999, issue of the Journal of the American Medical Association.

The study, conducted by Meryl S. LeBoff, MD; Lynn Kohlmeier, MD; Shelley Hurwitz, PhD; Jennifer Franklin, BA; John Wright, MD; and Julie Glowacki, PhD; of the Endocrine Hypertension Division, Department of Internal Medicine, and Department of Orthopedic Surgery, Brigham and Women's Hospital, Boston, was supported by grants from the National Institute on Aging (NIA) and the National Center for Research Resources (NCRR. These investigators studied women admitted to either Brigham and Women's Hospital or the New England Baptist Hospital, both in Boston, between January 1995 and June 1998.

A group of 98 postmenopausal women who normally reside in their own homes were chosen for the study. Women with bone deterioration from other causes were excluded from the study.

There were 30 women with hip fractures caused by osteoporosis and 68 hospitalized for elective joint replacement. Of these 68, 17 women also had osteoporosis as determined by the World Health Organization bone density criteria. All the participants answered questions regarding their lifestyle, reproductive history, calcium in their diet, and physical activity.

Bone mineral density of the spine, hip, and total body were measured by dual X-ray absorptiometry (DXA) technique, as was body composition. Blood chemistry and urinary calcium levels were analyzed. The two groups of women with osteoporosis did not differ significantly in either time since menopause or bone density in the spine or hip. They did, however, differ in total bone density.

The women admitted for a hip fracture had fewer hours of exercise than the control group. Fifty percent of the women with hip fractures were deficient in vitamin D, 36.7 percent had elevated parathyroid hormone (PTH) levels (a hormone which can stimulate loss of calcium from bone), and 81.8 percent had calcium in their urine, suggesting inappropriate calcium loss. Blood levels of calcium were lower in the women with hip fractures than in either elective group.

These researchers propose that vitamin D supplementation at the time of fracture may speed up recovery and reduce risk of fracture in the future. Current Dietary Reference Intake Guidelines contain a daily recommendation of 400 IU of vitamin D for people aged 51 through 70 and 600 IU for those over age 70.

"We know that a calcium-rich diet and regular weight-bearing exercise can help prevent osteoporosis. This new research suggests that an adequate intake of vitamin D, which the body uses to help absorb calcium, may help women to reduce their risk of hip fracture, even when osteoporosis is present," observed Dr. Evan C. Hadley, NIA Associate Director for geriatrics research.

"Osteoporosis leads to more than 300,000 hip fractures each year, causing pain, frequent disability, and costly hospitalizations or long-term care. "Prevention of such fractures would greatly improve the quality of life for many older women and men, as well as significantly reduce medical costs." The bones in the body often undergo rebuilding. Some cells, osteoclasts, dissolve older parts of the bones. Then, bone-building cells known as osteoblasts create new bone using calcium and phosphorus.

As people age, if osteoporosis develops, more bone is dissolved than is rebuilt, and the bones weaken and become prone to fracture. Also in many older persons, levels of vitamin D in the blood are low because they eat less or spend less time in the sun, which stimulates the body's own production of vitamin D.

Experts do not understand fully the causes of osteoporosis. However, they do know that lack of estrogen which accompanies menopause, diets low in calcium, and lack of exercise contribute to the problem. Eighty percent of older Americans who face the possibility of pain and debilitation from an osteoporosis-related fracture are women. One out of every two women and one in eight men over the age of 50 will have such a fracture sometime in the future. These fractures usually occur in the hip, wrist, and spine.

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Sleep Apnea, Diabetes Link Found. Adults who suffer from obstructive sleep apnea are three times more likely to also have diabetes and more likely to suffer a stroke in the future, according to a new UCLA School of Dentistry/Department of Veterans Affairs study published today in the Journal of Oral and Maxillofacial Surgery. Sleep apnea, a serious condition marked by loud snoring, irregular breathing and interrupted oxygen intake, affects an estimated nine million Americans. The culprit? Carrying too many extra pounds.

"The blame falls squarely on excess weight gain," said Dr. Arthur H. Friedlander, associate professor of oral and maxillofacial surgery at the UCLA School of Dentistry and associate chief of staff at the Veterans Affairs Medical Center in Los Angeles. Surplus weight interferes with insulin's ability to propel sugars from digested food across the cell membrane, robbing the cells of needed carbohydrates. Diabetes results when glucose builds up in the bloodstream and can't be utilized by the body. Being overweight can also lead to obstructive sleep apnea, according to Friedlander.

"When people gain too much weight, fatty deposits build up along the throat and line the breathing passages," he explained. "The muscles in this region slacken during sleep, forcing the airway to narrow and often close altogether." Reclining on one's back magnifies the situation. "When an overweight person lies down and goes to sleep," Friedlander said, "gravity shoves the fat in the neck backwards. This blocks the airway and can bring breathing to a halt."

Friedlander tested the blood sugar of 54 randomly selected male veterans whom doctors had previously diagnosed with obstructive sleep apnea. He discovered that 17 of the 54 patients, or 31 percent, unknowingly suffered from adult-onset diabetes. Using the same sample, Friedlander also took panoramic X-rays of the men's necks and jaws. The X-rays indicated that 12 of the 54 patients, or 22 percent, revealed calcified plaques in the carotid artery leading to the brain.

These plaques block blood flow, significantly increasing patients' risk for stroke. Seven of the 12, or 58 percent, were also diagnosed with diabetes. In dramatic comparison, the 17 patients diagnosed with diabetes showed nearly twice the incidence of blockage. Seven of the 17 men, or 41 percent, had carotid plaques. Only five of the 54 patients who displayed plaques did not have also diabetes. If he conducted this study today, Friedlander notes, he would likely find a higher number of diabetic patients. After he completed the study in 1997, the American Diabetes Association lowered its definition for diabetes from 140 to 126 milligrams of sugar per deciliter of blood.

"This is the first time that science has uncovered a link between sleep apnea and diabetes," said Friedlander. "The data suggest that someone afflicted with both diabetes and sleep apnea is more likely to suffer a stroke in the future." "Persons going to the doctor for a sleep-apnea exam should request that their blood be screened for diabetes, especially if they are overweight," he cautioned. More than half of the individuals who develop diabetes as adults will need to modify their diet and take daily insulin in order to control the disease, he added.

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Stress, Surgery May Increase CA Tumors. Stress and surgery may increase the growth of cancerous tumors by suppressing natural killer cell activity, says a Johns Hopkins researcher.

Malignancies and viral infections are in part controlled by the immune system's natural killer (NK) cells, a sub-population of white blood cells that seek out and kill certain tumor and virally infected cells. In a study using animal models, natural killer cell activity was suppressed by physical stress or surgery, resulting in a significant increase in tumor development.

These findings suggest that protective measures should be considered to prevent metastasis for patients undergoing surgery to remove a cancerous tumor, according to Gayle Page, D.N.Sc., R.N., associate professor and Independence Foundation chair at the Johns Hopkins School of Nursing. "Human studies have already found a connection between the level of NK activity and susceptibility to several different types of cancer," says Page, an author of the study.

"We sought to determine the importance of stress-induced suppression of NK activity and thus learn the effects of stress and surgery on tumor development. "Many patients undergo surgery to remove cancerous tumors that have the potential to spread. If our findings in rats can be generalized to such clinical settings, then these circumstances could increase tumor growth during or shortly after surgery." The research was conducted at Ohio State University College of Nursing and the Department of Psychology at UCLA, where Page held previous positions, and at Tel Aviv University.

Results of the study are published in the March issue of the International Journal of Cancer. In laboratory studies, Page and her colleagues subjected rats to either abdominal surgery or physical stress, and then inoculated them with cancer cells. In the rats that had undergone surgery, the researchers observed a 200 to 500 percent increase in the incidence of lung tumor cells, an early indicator of metastasis, compared with rats that had not received surgery.

The experiment also showed that stress increased lung tumor incidence and significantly increased the mortality in the animals inoculated with cancer cells. "Our results show that, under specific circumstances, resistance to tumor development is compromised by physical stress and surgical intervention," says Page.

"Because surgical procedures are life-saving and cannot be withheld, protective measures should be considered that will prevent suppression of the natural killer cell activity and additional tumor development. "Researchers do not yet know how to prevent surgery-induced immune suppression, but early animal studies have shown increased use of analgesia reduces the risk."

The study was funded by the National Institutes of Health, and the Chief Scientist of the Israeli Ministry of Health. Lead author was Shamgar Ben-Eliyahu, Ph.D., and other authors were Raz Yirmiya, Ph.D., and Guy Shakhar.

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Date: June 18, 2005 09:07 AM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Anti-Aging Nutrients

Anti-Aging Nutrients by Edward C. Wallace, DC, ND Energy Times, February 3, 2000

What's the big deal about trying to live longer? As you grow older (and the American population grows older alongside you) you may want to postpone the inevitable. Few wish to hasten "the journey from which no traveler returns." But as we approach that final bon voyage, chances are we desire clear sailing-aging without disability and with a peaceful, easy feeling.

How Do We Age?

Science has long puzzled about what causes the wrinkles, pains and deterioration of aging. In the search for causes, two basic theories have won over the most proponents: The first holds that cells are programmed with biological clocks that predetermine how many times they can reproduce before becoming non-functional. This theory has been largely formulated by the researcher Leonard Hayflick, MD.

The second basic theory, introduced by Denham Harman, MD, PhD, in the mid 1950s, holds that cells eventually break down due to attack by caustic molecules called free radicals that cause oxidative stress.

Programmed Cell Theory

In the early '60s, Dr. Hayflick observed that human fibroblasts (cells from connective tissue) in the laboratory refused to divide more than about 50 times. Dr. Hayflick also found that even if he froze the fibroblasts after 20 divisions, they would remember that they only had 30 divisions left after thawing.

Fifty cell divisions have been called the "Hayflick limit." Based on this research, scientists theorize that cells maintain a genetic clock that winds down as old age ensues. Many researchers believe the hypothalamus gland is the force behind our aging clocks, signaling the pituitary gland to release hormones that cause aging.

Free Radical/Oxidative Stress Theory

The other popular theory of aging pictures the human body as a cellular battlefield where attackers called free radicals damage our cells and tissues, making them age. In this scenario, a process called oxidation is the chief aging villain. On a microscopic level, oxidation generally entails molecules or atoms losing electrons. (Gaining electrons is called reduction.) The molecules or atoms that take these electrons are oxidizing agents.

Free radicals are substances that can exist with missing electrons, making them readily able to donate or accept electrons and damage structures in cells. As such, they are highly reactive, binding with and destroying important cellular compounds. Most of the free radicals in your body are made during metabolic processes. More are added from the food you eat and environmental pollution. Most of these free radicals contain oxygen molecules. As each cell makes energy in little structures called mitochondria, free radicals result. These oxidant by-products can damage DNA, proteins and lipids (fats). Consequently, toxic by-products of lipid peroxidation may cause cancer, inhibit enzyme activity and produce mutations in genetic material that make you age faster.

DNA Repair Theory

Free radical damage to DNA can cause cells to mutate or die. Your body makes enzymes that can repair this damage and slow aging. But, over time, the amount of damage overwhelms the body's ability to fix things. As cells grow older, their ability to patch up DNA diminishes and the rate of damage proceeds faster than repair. The result: We age and eventually die.

What Can We Do?

The free radical theory of aging suggests that taking antioxidants (compounds known to prevent free radical damage) in our food or as supplements may slow aging.

In the publication Age (18 [51] 1995: 62), it was reported that "aging appears to be caused by free radicals initiated by the mitochondria at an increasing rate with age. Superoxide and hydrogen peroxide radicals formed by the mitochondria during normal metabolism are major risk factors for disease and death after about the age of 28 in developed countries. Antioxidants from the diet lower the production of free radicals without impairing essential reactions to maintain body function."

Antioxidant Protection

Common dietary antioxidants include: vitamins E and C, carotenes, sulphur containing amino acids, co-enzyme Q10 and flavonoids (a group of plant compounds or pigments responsible for the color in fruits and flowers). In addition, melatonin, DHEA and the amino acid compound glutathione may also prove of benefit.

Glutathione along with the enzyme glutathione peroxidase are an essential part of free radical "quenching." (Quenching means changing free radicals into benign substances no longer capable of harm.) Deficiencies may suggest a decreased capacity to maintain detoxification and metabolic reactions in which glutathione plays a role, resulting in increased free radical stress and/or lipid peroxidation. Drinking too many alcoholic beverages can result in glutathione deficiency.

In a study in which 39 healthy men and 130 healthy women between the ages of 20 and 94 were evaluated for glutathione levels, the older subjects had significantly decreased levels (especially in the 60 to 79-year-old group). The authors felt that physical health and longevity were closely related to glutathione levels (Jrnl Lab & Clin Sci 120(5), Nov. 1992: 720-725). Poor nutrition and/or deficiencies in essential micronutrients and many prescription medications may contribute significantly to detoxification capacity in an aged individual. All of these circumstances are common in the elderly.

Eating a poor diet that contains too many processed foods without many fruits and vegetables can compromise your body's ability to detoxify pollutants, toxins and other harmful compounds. That can set off metabolic processes capable of fomenting large increases in free radical stress that can accelerate aging. Unfortunately, even in a country as prosperous as our own, nutrient deficiencies are frequent, especially in older citizens.

Nutrition Deficiencies

A study that looked at what elderly people consumed compared their reported intake with the 1989 Recommended Dietary Amount (RDA) and 1980 RDA: One of four people consumed only two-thirds of the RDA for calories and 60% consumed less than two-thirds of the RDA for vitamin D. As for other nutrients, 50% were found to have inadequate zinc levels (less than two-thirds of the RDA), 31% lacked calcium, 27% were short of vitamin B6, 25% didn't get enough magnesium, 7% missed out on folate and 6% ate less than two-thirds of the requirement for vitamin C (Nutrition Reviews (II), September 1995: S9-S15).

When researchers examine what everyone in the U.S. eats, they find that only 9% of Americans consume the recommended five servings of fruits and/or vegetables per day (Proceedings of the National Academy of Sciences, Sept 1993).

A diet high in fruits and vegetables is naturally high in antioxidant compounds and is believed to help you live longer. Unfortunately, if you buy your produce in the supermarket, those fruits and vegetables may also be rich in pesticide and herbicide residues (Consumer Reports, March 1999). Obviously, organic produce lacks these residues. But, in any case, research continues to indicate that a diet low in meats and animal fat and high in vegetables protects against antioxidant damage.

Longevity Diets

A six-year study of 182 people over age 70 in rural Greek villages found that those following their traditional diet of olive oil, whole grain breads, fresh fruits and vegetables and wine were less likely to die during the study than those who consumed more red meat and saturated fat. The most important foods in lowering the risk of early death included fruits, vegetables, legumes (peas and beans), nuts, dairy products and cereals (BMJ 311, 1995: 1457-1460).

Another article in Epidemiology highlights the evidence that eating a vegetarian diet increases your chances of living longer. Included in this survey is a recent country-wide study of diet and health in China, showing that the traditional near vegetarian diet of 10% to 15% of calories coming from dietary fat reduced the chances of heart disease, diabetes and many types of cancers (Epidemiology 3[5], 1992: 389-391).

Staying Alive

Staying skinny and limiting what you eat may also increase longevity. Scientific studies have previously shown that being overweight can theoretically curtail your life, increasing the risk of heart disease, diabetes and other life-shortening conditions. Animal studies have also shown that restricting food can slow diseases associated with aging. Researchers believe that cutting calories helps your immune system stay younger by reducing the formation of substances that are called proinflammatory cytokines.

Specifically reducing your intake of fatty foods may decrease your chance of coming down with autoimmune diseases. Researchers think omega-6 fatty acid vegetable oils (like corn oil) may increase free radical formation and decrease levels of antioxidant enzyme messenger RNA in addition to other effects (Nutrition Reviews 53[4], 1995: S72-S79). Another study found that cutting calories lowers the levels of oxidative stress and damage, retards age-associated changes and extends maximum life span in mammals (Science 273, July 5, 1996: 59-63).

In yet another study, it was shown that caloric restriction early in the life of lab animals increased their life span by a whopping 40% (Australian Family Physician 23[7], July 1994: 1297-1305). Today's modern higher-fat, low-fiber diet with substantial sugar consumption represents everything the longevity researchers say you shouldn't eat.

Longevity and Exercise

Exercise may slow aging. When researchers looked at the exercise habits of 17,000 men, average age of 46, they found that those who took part in vigorous activity lived longer.

Exercise can improve both cardiac and metabolic functions within the body, while also decreasing heart disease risk. Even modest exercise has been shown to improve cholesterol and blood sugar levels (JAMA 273[15], April 19, 1995: 1179-1184). In a study of how exercise affects your chances of living longer, 9,773 men underwent preventive medicine examinations on two different occasions. When the researchers looked at who lived longest, they found the highest death rate was in men who were unfit during both physical exams.

The Treadmill of Life

The lowest death rate was in the men who worked out and were in good shape. The researchers concluded that for each minute increase in how long a man could keep treading on a treadmill (between the first and second exam) there was a corresponding 7.9% decrease in the risk of dying (JAMA 273 [14], April 12, 1995: 1093-1098).

Since exercise can increase oxygen consumption up to 10 times, boosting the rate of production of free radicals, researchers believe that older individuals need more antioxidant nutrients to protect them. In a paper published in Aging Clinical and Experimental Research (1997), researchers stated that if you regularly exercise in your golden years, you should take more antioxidant vitamins to compensate for this risk.

Longevity Supplementation

Melatonin is not often thought of as an antioxidant, but, instead, as a sleep aid. Melatonin, however, is an effective and efficient free radical scavenger and may help stave off the effects of aging. Melatonin protects against what are called hydroxyl free radicals. Research shows that older people's lack of melatonin may make them more susceptible to oxidative stress. In one study, researchers felt that new therapies aimed at stimulating melatonin synthesis may eventually lead to therapies for the prevention of diseases related to premature aging (Aging and Clinical Experimental Research 7[5], 1995: 338-339). Melatonin was shown to provide antioxidant protection in several ways.

Toning Down Enzymes

Melatonin can ease the effects of enzymes that generate free radicals, enhance the production of glutathione peroxidase (an antioxidant) and defuse the caustic action of free radicals that contain hydroxyls. In several studies, DHEA supplementation has been shown to potentially revive immune function in older adults (Exp. Opin. Invest. Drugs 4[2], 1995: 147-154).

In a study of 138 persons older than 85 years compared to 64 persons 20 to 40 years of age, scientists found that the younger people had four times as much DHEA in their bodies.

The researchers believe that our bodies make less and less DHEA as we get older. The authors of this study raise the possibility that declining DHEA may be partly to blame for our biological clocks running down (New York Academy of Sciences 1994: 543-552).

Vitamins E & C

A growing body of research also supports the benefits of taking vitamins E and C to hold off the effects of getting old. Researchers writing in Free Radicals and Aging (1992: 411-418) point out that as you get older your body is home to more and more free radical reactions that may lead to degenerative diseases like heart disease and arthritis. Research has found that in older people with exercise-induced oxidative stress, taking vitamin E every day may significantly fight off free radicals. (To investigate this effect, scientists measured waste products in urine that result from free radical reactions.) Their conclusion: Dietary antioxidants such as vitamin E may be beneficial.

Chronological Age Vs.Biological Age

Vitamin C also looks to scientists like a good anti-aging bet. Research in the Journal of Advancement in Medicine, (7[1], Spring 1994: 31-41) showed that folks consuming larger amounts of vitamin C were less likely to experience clinical problems at all ages. Those taking in less than 100 mg of vitamin C per day also suffered the most problems.

In this research, individuals over 50 years of age who daily consumed the largest amount of vitamin C were as healthy or healthier than the 40 year olds who were taking the least amount of vitamin C.

Similar Relationship

A similar relationship appears to exist for vitamin E and serum cholesterol levels. In a study of 360 physicians and their spouses, researchers found that people in their 50s who consumed more vitamin E had lower cholesterol than those in their 30s who were taking less.

And the longevity beat goes on: In a study evaluating environmental tobacco smoke and oxidative stress, researchers divided 103 people into three groups. Researchers blew smoke at 37 of these folks without protection while 30 of them got to breathe tobacco smoke but took antioxidant supplementation. Another 36 of them merely had to read magazines from doctors' offices. The results: After 60 days of supplementation the antioxidant folks had a 62% reduction in evidence of oxidative damage to their DNA. Cholesterol levels dropped and so did antioxidant enzyme activities. The researchers concluded that taking antioxidants provided a modicum of protection against environmental poisons.

The range of antioxidant nutrients used in this study included: beta-carotene, vitamin C, vitamin E, zinc and selenium as well as copper (Cancer Epidemiol Biomarkers Prev 7, November 1998: 981-988).

Carotenoids

When you mention carotene or carotenoids, most people think of the beta carotene that makes carrots orange. But more than 600 carotenoids are present in colorful vegetables and many of these misunderstood substances are more potent antioxidants than beta-carotene.

Carotenoids have been shown to destroy oxygen free radicals in lipids (fats), help protect our cells from the sun's ultra violet radiation and enhance our natural immune response (J. Nutr 119[1], Jan. 1989: 112-115).

Some evidence seems to show that how much carotenoids you (and other mammals) have in your cells may be the predominant factor in determining life span (Proc Natl Acad Sci 82 [4], 1985: 798-802). Therefore, a diet rich in carotenoids (leafy green vegetables, carrots, yams, sweet potatoes, squash, citrus fruits and tomatoes) along with supplementation seems to be just what the fountain of youth ordered.

Flavonoids

Flavonoids, a group of antioxidant plant pigments, seem to be able to protect specific organs. For instance, the flavonoids in milk thistle (Silybum marianum) have been used for ages for liver problems. Bilberry has been found protective for the eye and hawthorn for the heart and circulatory system.

Numerous studies have shown the many beneficial effects of flavonoids with perhaps the best known being the ability of anthocyanidins in wine and grape seed extract to help protect your blood vessels and capillaries from oxidative damage (Phytotherapy 42, 1986: 11-14; Am J Clin Nutr 61, 1995: 549-54).

Flavonoids are found in vegetables and such fruits as blackberries, blueberries, cherries and grapes. A diet rich in these foods helps ensure an adequate intake of these important nutrient compounds.

Amino Acid Health

Methionine and cysteine are sulphur containing amino acids (protein building blocks), both of which are essential in maintaining levels of glutathione, a substance that plays a major role in quelling free radicals. Studies have found that as we age, the level of these important amino acids in our bodies decreases. (NEJM 312 [1], 1985: 159-68). As it has been shown that adding cysteine to the diet of test animals can increase their life expectancy considerably, researchers believe these amino acids can help us live longer too.

Attitude & Behavior

Get more sleep! A recent study showed that men who habitually napped were less likely to have a heart attack. The men in this research who regularly napped for at least 30 minutes per day had about a 30% reduction in heart problems while those who napped for a full hour had a 50% reduction compared to non nappers. Naps of longer duration did not seem to increase the benefit. In the same research, investigators also found that spending time with a pet or merely contemplating nature could also improve cardiac health. Sensuality, optimism and altruism also appeared to have health benefits (Family Practice News, December 15, 1998: 14-15).

In another study, this one in American Psychologist, researchers from the University of California found that people who are self-indulgent, pampered and achieve by running roughshod over the competition are less likely to outlive their healthy peers. Being egocentric, impulsive, undependable and tough-minded were predictors of poor physical health and a shorter life. So loosen up and be nice to your fellow humans! (U.C. Davis Magazine, Fall 1995: 14).

Longevity at Last

While no one has suggested that taking supplements, eating vegetables or exercising can, as of yet, extend the human life span past the generally recognized limit of about 120 years, researchers believe they can improve your odds of longer life. And by staying healthier, your old age will be more enjoyable, too.

--
Vitanet ®

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Date: June 12, 2005 02:09 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Energy Cycles - Stress and lack of energy don't just frazzle your nerves

Energy Cycles by Sylvia Whitefeather Energy Times, August 2, 2003

Feeling stressed out and exhausted from an overburdened schedule? Regenerating your personal energy necessitates defusing stress. Stress and lack of energy don't just frazzle your nerves; they can leave you depressed, anxious and vulnerable to a long list of health problems.

According to J. Douglas Bremner, MD, a psychiatrist at Emory University, Atlanta, when your brain overcharges on prolonged stress, your body pays a heavy, tiring price.

"If stress has effects on the brain and neurological function, then stress has effects on all parts of the body, including the heart, blood vessels, immune system and digestive system," says Dr. Bremner, author of Does Stress Damage the Brain? (Norton). "The long list of damaging effects can include heart disease, memory impairment, depression and even increased susceptibility to stroke and cancer."

A Good Night's Sleep

Although getting a good night's sleep is a basic part of lowering stress and boosting energy, many of us seem to be tossing and turning through an epidemic of insomnia. The fact that so many people appear to suffer from disturbed and unsatisfying sleep may signal not only a personal energy lack, but also a deeper health crisis developing on the horizon. Lack of sleep, along with stress, not only contributes to those lackluster afternoons of the blahs, but it can also derail your basic body rhythms, weaken your immune system and make you age quicker.

Researchers at the University of Chicago report that lack of sleep may deplete your get-up-and-go by upsetting basic metabolic functions and interfering with hormones. Pretty serious stuff: When people in this experiment cut back their sleep time to about four hours each night, their bodies behaved as if they were twenty years older and they started showing signs of developing diabetes. These effects happened in only a week of missing sleep (The Lancet, October 23, 1999).

The drastically reduced sleep schedule slowed the thyroid gland, reducing the production and action of thyroid hormones. As a result, metabolism slowed and the non-sleepers developed that awful sluggish feeling too many of us know and hate.

Stress from lack of sleep also coaxed the adrenal glands into releasing extra amounts of cortisol, a stress hormone whose purpose is to force the body into providing short-lived energy boosts. But after a while the body flames out, its ability to cope with daily demands drained even further.

"We found that the metabolic and endocrine changes resulting from a significant sleep debt mimic many of the hallmarks of aging," says Eve Van Couter, PhD, professor of medicine at the University of Chicago and director of the study. "We suspect that chronic sleep loss may not only hasten the onset but could also increase the severity of age-related ailments such as diabetes, hypertension, obesity and memory loss."

And when are you are constantly short-changed of sleep, it builds up an accumulative effect. Particularly susceptible are busy parents, shift workers, menopausal women and college students.

One way to take back your energy from this metabolic madness is to get twelve hours of sleep a night for a week. But aside from hitting the snooze button a few hundred times, a possible antidote to this cortisol nightmare may be vitamin C.

Fight and Flight

The human body, which evolved before the advent of split-level houses and SUVs, was built to survive life-threatening, physical danger. When it encounters modern-day stress, such as traffic jams and credit card bills, it releases extra cortisol, heightening the body's immediate ability to run or fight. As a result of cortisol release, senses go on high alert, heart rate speeds up, blood flow to muscles increases, and the immune system mobilizes to deal with what it thinks is an imminent crisis.

However, unlike physical danger that rapidly resolves (either you get away from what's trying to harm you or it does you in), today's stress drags on and on (at least till the next exit on the expressway), and the cortisol in the body continues to circulate.

The long-range result of persistent cortisol is a drop in energy, rampant fatigue and lowered immunity. You feel constantly tired and you get sick more often. You may also gain weight.

But researchers at the University of Alabama at Huntsville have found that large doses of vitamin C "reduce...the levels of stress hormones in the blood and also reduce...other typical indicators of physical and emotional stress, such as loss in body weight, enlargement of the adrenal glands, and reduction in the size of the thymus gland and the spleen," according to P. Samuel Campbell, PhD (American Chemical Society, 1999). Dr. Campbell believes that our prehistoric ancestors probably consumed large amounts of vitamin C in a tropical diet rich in fruits. "If so, the physiological constitution we have inherited may require doses far larger than the present RDA (the amount the government recommends) to keep us healthy under varying environmental conditions, including stress."

Iron Out the Fatigue

If you are a premenopausal woman, a lack of iron may also be draining your body of energy. According to experts, as many as one of every five women who menstruate may suffer anemia caused by a lack of iron. This type of problem is also frequent in teenagers and during pregnancy. (But before you take iron supplements, talk to your health practitioner to make sure this is the source of your fatigue.)

"Women with heavy menstrual flow have the greatest risk (of anemia)," points out Susan Lark, MD, in Healing with Vitamins (Rodale). Dr. Lark recommends eating more iron-rich foods (like organic red meat) even if you are not anemic, since a mild iron deficiency can drag you down into the doldrums.

Vegetarians necessarily eat fewer iron-rich foods than do meat eaters. But if you take a vitamin C supplement when you consume such iron-rich vegetables as lima beans, pinto beans and spinach, your body can absorb more of the iron in these foods.

The Krebs Cycle: Keep the Wheel Turning

All of your cells make the energy that keeps you going. This process, a complicated chemical reaction called the Krebs cycle, transforms fatty acids and carbohydrates into ATP (adenosine triphosphate) for cellular energy. Mitochondria, small structures in each cell, are the centers of this energy production.

Energy production requires oxygen. The more oxygen available to the cells, the more energy is produced. Deep breathing and moderate exercise are simple, quick ways to oxygenate the body and boost energy. That is why walking, jogging and other physical activity wakes up your brain and restores pep.

If you've been looking for ways to feel more energetic, take a deep breath and go for a long walk before you sit down to your rejuvenating lima beans and vitamin C. And another thing...take a pass on those late-night TV shows. Sleep is more important.

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Vitanet ®

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Date: June 11, 2005 05:18 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: The Flex Factor

The Flex Factor by Thomas Dunville Energy Times, February 10, 2004

Arthritis, according to recent research, presents its sufferers with a Catch-22: The nagging pain of this condition can send your spirits plummeting. But, then, the depression spurred by the disconsolate persistence of arthritic pain can make the condition worse.

Part of the trick is not to give in. If you can keep a bright mood even as your joints start to ache, the pain may lessen.

While nobody can offer a guaranteed, 100% effective cure for arthritis, you don't have to be a passive victim. Exercise, the proper nutrients and a positive, can-do attitude can ease arthritis pain so effectively that scientists have been able to measure the difference. While medical researchers recognize the existence of over 100 types of arthritis, most people with achy joints suffer from osteoarthritis, which is caused by everyday wear and is found in just about everyone over age 60. When this condition occurs, the body's cushioning, its cartilage, thins and the inner surfaces of joints grind together painfully.

Although aging itself increases your chances of enduring achy joints, other factors can also put you in the way of osteoarthritis. If you carry too much weight, it can wear on your joints. In addition, suffering a joint injury when you're young can increase your risk of developing osteoarthritis as you age.

In another prevalent form of joint pain, rheumatoid arthritis (RA), the body's immune system mistakenly attacks the membranes lining the joints, causing swelling and pain. About 2 million Americans suffer from RA, which affects women about twice as often as men.

Exercise Away Arthritic Woes

Weekend warriors, don't despair! Arthritis doesn't have to mean the end of your weekend athletic wars. Matter of fact, in many cases, experts now recommend exercise to reduce the effects of arthritis.

While that might sound counterintuitive, a study out of the Netherlands shows that folks in the early stages of rheumatoid arthritis who work out twice a week for about an hour each session may enjoy better physical and mental health than couch potatoes who receive physical therapy.

The Dutch study took 150 people, many of whom had just started to suffer from rheumatism, and enrolled them in RAPIT, an acronym for Rheumatoid Arthritis Patients in Training. Rather than letting these folks rest their inflamed joints, twice a week the research team took them to the gym where they did:

When the researchers compared the physical changes in these arthritis sufferers with 150 others with similar arthritis complaints who underwent physical therapy without organized physical activity, they found that after two years the exercisers had benefited greatly. They were stronger and more aerobically fit, could perform everyday tasks more effectively and possessed a better, more optimistic mental attitude (Arthritis and Rheumatism 2003; 48(9):2415-24).

However, the exercisers who were already suffering severe rheumatoid arthritis did experience some extra joint damage, so the researchers believe this kind of program is better for those in the early stages of the disease. " This study demonstrates that participation in long-term high-intensity exercise classes decreases the level of psychological distress in RA patients," says researcher Zuzana de Jong, MD, a professor at the Leiden University Medical Center in the Netherlands.

Fish Oil Lowers Arthritis Risk

Fish oil-in particular, cod liver oil-may be able to help ease osteoarthritis.

In looking at the effects of fish oil, researchers at Cardiff, Wales, discovered indications that "...the omega-3 fatty acids in cod liver oil can reduce cartilage degradation and inflammation in arthritic disease," according to Bruce Caterson, PhD, one of the scientists involved.

Dr. Caterson adds, "Our most recent work shows that by exposing human osteoarthritic cartilage to cod liver oil in the laboratory for just 24 hours we can turn off, or reverse, the action of the degradative enzymes and inflammatory factors affecting the tissue." John Harwood, PhD, another member of the Cardiff research team, adds, "This is where science and old wives' tales coincide. Our findings are consistent with advice that taking cod liver oil in early adulthood could prevent the onset of osteoarthritis and would reduce the harmful symptoms associated with the disease."

Dr. Caterson further explains that the omega-3 fatty acids in cod liver oil inhibit enzymes that break down aggrecan and collagen, substances that cushion joints. Consequently, cartilage stays healthier, inflammation is lessened and arthritic pain decreases. The anti-inflammatory action of omega-3s in fighting rheumatoid arthritis is also supported by studies performed in the US (Am J Clin Nutr 2000; 71(1 Suppl):349S-51S).

Other research shows that if you take natural vitamin E along with fish oil, you may improve even further your odds of relieving arthritis or lessening its effects (JACN 10/30/00).

Glucosamine Repair

Glucosamine, the stuff that cartilage is made from, has been shown to lower the risk of arthritis and possibly relieve its pain. This natural substance, made from a sugar and a molecule called an amine, is a building block of joint tissue. As a result, experts believe, when you take it in supplemental form, the body may use it to repair joints that have been damaged by arthritis. For instance, an investigation of osteoarthritis of the knee performed at the University of Liege in Belgium showed that taking glucosamine could stop joints from deteriorating.

The study, which involved more than 200 people suffering from osteoarthritis, found that in three years of taking glucosamine supplements, many arthritis sufferers found that their condition actually improved (Lancet 2001 Jan 27; 357).

Other Arthritis Fighters

Chondroitin sulfate is another material that goes into the making of cartilage. Chondroitin helps cartilage stay hydrated and permits the flow of nutrients through the joint tissues. In addition, researchers believe that chondroitin helps fight inflammation, which can otherwise cause pain and stiffness as well as joint destruction.

Taken together with glucosamine, chondroitin is believed to hasten the healing of bone and cartilage. Another substance that may help ease the ache of arthritis is methylsulfonylmethane (MSM), a naturally occurring sulfur-bearing compound. "MSM appears to have anti-inflammatory effects when administered orally, intravenously or topically," says MSM researcher Stanley Jacob, MD, FACS, of the Oregon Health & Science University. That means it has shown an ability to reduce the heat, pain and swelling associated with arthritic conditions. MSM may also be able to reduce muscle spasms around joints and reduce the formation of scar tissue.

Herbal Aid

Herbal medicine has long been used by folks with achy joints. The yellow spice turmeric (Curcuma longa), a staple of Indian cooking, is a traditional Indian remedy for arthritis because of its painkilling properties. Ginger (Zingiber officinale), another culinary favorite, restrains the production of inflammatory chemicals called cytokines. And willow bark (Salix sp), the source of aspirin, is longer-acting and doesn't irritate the stomach lining.

Those who suffer arthritis know that its pain and discomfort are often no laughing matter. But if you don't take arthritis lying down and manage to keep a smile on your face-and avail yourself of nature's remedies-you can get the upper hand on this often debilitating condition.

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Vitanet ®

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Date: June 10, 2005 09:59 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Nutrients for Longevity

Nutrients for Longevity by Edward C. Wallace, ND, DC Energy Times, September 1, 1999

What's the big deal about trying to live longer? As you grow older (and the American population grows older alongside you) you may want to postpone the inevitable. Few wish to hasten "the journey from which no traveler returns." But as we approach that final bon voyage, chances are we desire clear sailing-aging without disability and with a peaceful easy feeling.

How Do We Age

Science has long puzzled about what causes the wrinkles, pains and deterioration of aging. In the search for causes, two basic theories have won over the most proponents: The first holds that cells are programmed with biological clocks that predetermine how many times they can reproduce before becoming non-functional. This theory has been largely formulated by the researcher Leonard Hayflick, MD.

The second basic theory, introduced by Denham Harman, MD, PhD, in the mid 1950s, holds that cells eventually break down due to attack by caustic molecules called free radicals that cause oxidative stress.

Programmed Cell Theory

In the early '60s, Dr. Hayflick observed that human fibroblasts (cells from connective tissue) in the laboratory refused to divide more than about 50 times. Dr. Hayflick also found that even if he froze the fibroblasts after 20 divisions, they would remember that they only had 30 divisions left after thawing.

Fifty cell divisions have been called the "Hayflick limit." Based on this research, scientists theorize that cells maintain a genetic clock that winds down as old age ensues. Many researchers believe the hypothalamus gland is the force behind our aging clocks, signaling the pituitary gland to release hormones that cause aging.

Free Radical/Oxidative Stress Theory

The other popular theory of aging pictures the human body as a cellular battlefield where attackers called free radicals damage our cells and tissues, making them age. In this scenario, a process called oxidation is the chief aging villain.

On a microscopic level, oxidation generally entails molecules or atoms losing electrons. (Gaining electrons is called reduction.) The molecules or atoms that take these electrons are oxidizing agents. Free radicals are substances that can exist with missing electrons, making them readily able to donate or accept electrons and damage structures in cells. As such, they are highly reactive, binding with and destroying important cellular compounds. Most of the free radicals in your body are made during metabolic processes. More are added from the food you eat and environmental pollution.

Most of these free radicals contain oxygen molecules. As each cell makes energy in little structures called mitochondria, free radicals result. These oxidant by-products can damage DNA, proteins and lipids (fats). Consequently, toxic by-products of lipid peroxidation may cause cancer, inhibit enzyme activity and produce mutations in genetic material that make you age faster.

DNA Repair Theory

Free radical damage to DNA can cause cells to mutate or die. Your body makes enzymes that can repair this damage and slow aging. But, over time, the amount of damage overwhelms the body's ability to fix things. As cells grow older, their ability to patch up DNA diminishes and the rate of damage proceeds faster than repair. The result: We age and eventually die.

What Can We Do

The free radical theory of aging suggests that taking antioxidants (compounds known to prevent free radical damage) in our food or as supplements may slow aging.

In the publication Age (18 [51] 1995: 62), it was reported that "aging appears to be caused by free radicals initiated by the mitochondria at an increasing rate with age. Superoxide and hydrogen peroxide radicals formed by the mitochondria during normal metabolism are major risk factors for disease and death after about the age of 28 in developed countries. Antioxidants from the diet lower the production of free radicals without impairing essential reactions to maintain body function."

Antioxidant Protection

Common dietary antioxidants include: vitamins E and C, carotenes, sulphur containing amino acids, co-enzyme Q10 and flavonoids (a group of plant compounds or pigments responsible for the color in fruits and flowers). In addition, melatonin, DHEA and the amino acid compound glutathione may also prove of benefit.

Glutathione along with the enzyme glutathione peroxidase are an essential part of free radical "quenching." (Quenching means changing free radicals into benign substances no longer capable of harm.)

Deficiencies may suggest a decreased capacity to maintain detoxification and metabolic reactions in which glutathione plays a role, resulting in increased free radical stress and/or lipid peroxidation. Drinking too many alcoholic beverages can result in glutathione deficiency.

In a study in which 39 healthy men and 130 healthy women between the ages of 20 and 94 were evaluated for glutathione levels, the older subjects had significantly decreased levels (especially in the 60 to 79-year-old group). The authors felt that physical health and longevity were closely related to glutathione levels (Jrnl Lab & Clin Sci 120(5), Nov. 1992: 720-725).

Poor nutrition and/or deficiencies in essential micronutrients and many prescription medications may contribute significantly to detoxification capacity in an aged individual. All of these circumstances are common in the elderly.

Eating a poor diet that contains too many processed foods without many fruits and vegetables can compromise your body's ability to detoxify pollutants, toxins and other harmful compounds. That can set off metabolic processes capable of fomenting large increases in free radical stress that can accelerate aging. Unfortunately, even in a country as prosperous as our own, nutrient deficiencies are frequent, especially in older citizens.

Nutrition Deficiencies

A study that looked at what elderly people consumed compared their reported intake with the 1989 Recommended Dietary Amount (RDA) and 1980 RDA: One of four people consumed only two-thirds of the RDA for calories and 60% consumed less than two-thirds of the RDA for vitamin D. As for other nutrients, 50% were found to have inadequate zinc levels (less than two-thirds of the RDA), 31% lacked calcium, 27% were short of vitamin B6, 25% didn't get enough magnesium, 7% missed out on folate and 6% ate less than two-thirds of the requirement for vitamin C (Nutrition Reviews (II), September 1995: S9-S15).

When researchers examine what everyone in the U.S. eats, they find that only 9% of Americans consume the recommended five servings of fruits and/or vegetables per day (Proceedings of the National Academy of Sciences, Sept 1993).

A diet high in fruits and vegetables is naturally high in antioxidant compounds and is believed to help you live longer. Unfortunately, if you buy your produce in the supermarket, those fruits and vegetables may also be rich in pesticide and herbicide residues (Consumer Reports, March 1999). Obviously, organic produce lacks these residues. But, in any case, research continues to indicate that a diet low in meats and animal fat and high in vegetables protects against antioxidant damage.

Longevity Diets

A six-year study of 182 people over age 70 in rural Greek villages found that those following their traditional diet of olive oil, whole grain breads, fresh fruits and vegetables and wine were less likely to die during the study than those who consumed more red meat and saturated fat. The most important foods in lowering the risk of early death included fruits, vegetables, legumes (peas and beans), nuts, dairy products and cereals (BMJ 311, 1995: 1457-1460)

Another article in Epidemiology highlights the evidence that eating a vegetarian diet increases your chances of living longer. Included in this survey is a recent country-wide study of diet and health in China, showing that the traditional near vegetarian diet of 10% to 15% of calories coming from dietary fat reduced the chances of heart disease, diabetes and many types of cancers. (Epidemiology 3[5], 1992: 389-391).

Staying Alive

Staying skinny and limiting what you eat may also increase longevity. Scientific studies have previously shown that being overweight can theoretically curtail your life, increasing the risk of heart disease, diabetes and other life-shortening conditions. Animal studies have also shown that restricting food can slow diseases associated with aging. Researchers believe that cutting calories helps your immune system stay younger by reducing the formation of substances that are called proinflammatory cytokines.

Specifically reducing your intake of fatty foods may decrease your chance of coming down with autoimmune diseases. Researchers think omega-6 fatty acid vegetable oils (like corn oil) may increase free radical formation and decrease levels of antioxidant enzyme messenger RNA in addition to other effects. (Nutrition Reviews 53[4], 1995: S72-S79). Another study found that cutting calories lowers the levels of oxidative stress and damage, retards age-associated changes and extends maximum life span in mammals (Science 273, July 5, 1996: 59-63).

In yet another study, it was shown that caloric restriction early in the life of lab animals increased their life span by a whopping 40% (Australian Family Physician 23[7], July 1994: 1297-1305). Today's modern higher-fat, low-fiber diet with substantial sugar consumption represents everything the longevity researchers say you shouldn't eat.

Longevity and Exercise:

Exercise may slow aging. When researchers looked at the exercise habits of 17,000 men, average age of 46, they found that those who took part in vigorous activity lived longer.

Exercise can improve both cardiac and metabolic functions within the body, while also decreasing heart disease risk. Even modest exercise has been shown to improve cholesterol and blood sugar levels (JAMA 273[15], April 19, 1995: 1179-1184).

In a study of how exercise affects your chances of living longer, 9,773 men underwent preventive medicine examinations on two different occasions. When the researchers looked at who lived longest, they found the highest death rate was in men who were unfit during both physical exams.

The Treadmill of Life

The lowest death rate was in the men who worked out and were in good shape. The researchers concluded that for each minute increase in how long a man could keep treading on a treadmill (between the first and second exam) there was a corresponding 7.9% decrease in the risk of dying. (JAMA 273 [14], April 12, 1995: 1093-1098).

Since exercise can increase oxygen consumption up to 10 times, boosting the rate of production of free radicals, researchers believe that older individuals need more antioxidant nutrients to protect them. In a paper published in Aging Clinical and Experimental Research (1997), researchers stated that if you regularly exercise in your golden years, you should take more antioxidant vitamins to compensate for this risk.

Longevity Supplementation

Melatonin is not often thought of as an antioxidant, but, instead, as a sleep aid. Melatonin, however, is an effective and efficient free radical scavenger and may help stave off the effects of aging.

Melatonin protects against what are called hydroxyl free radicals. Research shows that older people's lack of melatonin may make them more susceptible to oxidative stress. In one study, researchers felt that new therapies aimed at stimulating melatonin synthesis may eventually lead to therapies for the prevention of diseases related to premature aging (Aging and Clinical Experimental Research 7[5], 1995: 338-339). Melatonin was shown to provide antioxidant protection in several ways.

Toning Down Enzymes

Melatonin can ease the effects of enzymes that generate free radicals, enhance the production of glutathione peroxidase (an antioxidant) and defuse the caustic action of free radicals that contain hydroxyls.

In several studies, DHEA supplementation has been shown to potentially revive immune function in older adults (Exp. Opin. Invest. Drugs 4[2], 1995: 147-154).

In a study of 138 persons older than 85 years compared to 64 persons 20 to 40 years of age, scientists found that the younger people had four times as much DHEA in their bodies.

The researchers believe that our bodies make less and less DHEA as we get older. The authors of this study raise the possibility that declining DHEA may be partly to blame for our biological clocks running down (New York Academy of Sciences 1994: 543-552).

Vitamins E & C

A growing body of research also supports the benefits of taking vitamins E and C to hold off the effects of getting old. Researchers writing in Free Radicals and Aging (1992: 411-418) point out that as you get older your body is home to more and more free radical reactions that may lead to degenerative diseases like heart disease and arthritis. Research has found that in older people with exercise-induced oxidative stress, taking vitamin E every day may significantly fight off free radicals. (To investigate this effect, scientists measured waste products in urine that result from free radical reactions.) Their conclusion: Dietary antioxidants such as vitamin E may be beneficial.

Chronological Age Vs. Biological Age

Vitamin C also looks to scientists like a good anti-aging bet. Research in the Journal of Advancement in Medicine, (7[1], Spring 1994: 31-41) showed that folks consuming larger amounts of vitamin C were less likely to experience clinical problems at all ages. Those taking in less than 100 mg of vitamin C per day also suffered the most problems. In this research, individuals over 50 years of age who daily consumed the largest amount of vitamin C were as healthy or healthier than the 40 year olds who were taking the least amount of vitamin C.

Similar Relationship

A similar relationship appears to exist for vitamin E and serum cholesterol levels. In a study of 360 physicians and their spouses, researchers found that people in their 50s who consumed more vitamin E had lower cholesterol than those in their 30s who were taking less. And the longevity beat goes on: In a study evaluating environmental tobacco smoke and oxidative stress, researchers divided 103 people into three groups. Researchers blew smoke at 37 of these folks without protection while 30 of them got to breathe tobacco smoke but took antioxidant supplementation. Another 36 of them merely had to read magazines from doctors' offices. The results: After 60 days of supplementation the antioxidant folks had a 62% reduction in evidence of oxidative damage to their DNA. Cholesterol levels dropped and so did antioxidant enzyme activities. The researchers concluded that taking antioxidants provided a modicum of protection against environmental poisons.

The range of antioxidant nutrients used in this study included: beta-carotene, vitamin C, vitamin E, zinc and selenium as well as copper (Cancer Epidemiol Biomarkers Prev 7, November 1998: 981-988).

Carotenoids

When you mention carotene or carotenoids, most people think of the beta carotene that makes carrots orange. But more than 600 carotenoids are present in colorful vegetables and many of these misunderstood substances are more potent antioxidants than beta-carotene.

Carotenoids have been shown to destroy oxygen free radicals in lipids (fats), help protect our cells from the sun's ultra violet radiation and enhance our natural immune response (J. Nutr 119(1), Jan. 1989: 112-115).

Some evidence seems to show that how much carotenoids you (and other mammals) have in your cells may be the predominant factor in determining life span (Proc Natl Acad Sci 82 [4], 1985: 798-802). Therefore, a diet rich in carotenoids (leafy green vegetables, carrots, yams, sweet potatoes, squash, citrus fruits and tomatoes) along with supplementation seems to be just what the fountain of youth ordered.

Flavonoids

Flavonoids, a group of antioxidant plant pigments, seem to be able to protect specific organs.

For instance, the flavonoids in milk thistle (Silybum marianum) have been used for ages for liver problems. Bilberry has been found protective for the eye and hawthorn for the heart and circulatory system.

Numerous studies have shown the many beneficial effects of flavonoids with perhaps the best known being the ability of anthocyanidins in wine and grape seed extract to help protect your blood vessels and capillaries from oxidative damage (Phytotherapy 42, 1986: 11-14; Am J Clin Nutr 61, 1995: 549-54).

Flavonoids are found in vegetables and such fruits as blackberries, blueberries, cherries and grapes. A diet rich in these foods helps ensure an adequate intake of these important nutrient compounds.

Amino Acid Health

Methionine and cysteine are sulphur containing amino acids (protein building blocks), both of which are essential in maintaining levels of glutathione, a substance that plays a major role in quelling free radicals. Studies have found that as we age, the level of these important amino acids in our bodies decreases. (NEJM 312 [1], 1985: 159-68).

As it has been shown that adding cysteine to the diet of test animals can increase their life expectancy considerably, researchers believe these amino acids can help us live longer too.

Attitude & Behavior

Get more sleep! A recent study showed that men who habitually napped were less likely to have a heart attack. The men in this research who regularly napped for at least 30 minutes per day had about a 30% reduction in heart problems while those who napped for a full hour had a 50% reduction compared to non nappers. Naps of longer duration did not seem to increase the benefit.

In the same research, investigators also found that spending time with a pet or merely contemplating nature could also improve cardiac health. Sensuality, optimism and altruism also appeared to have health benefits (Family Practice News, December 15, 1998: 14-15).

In another study, this one in American Psychologist, researchers from the University of California found that people who are self-indulgent, pampered and achieve by running roughshod over the competition are less likely to outlive their healthy peers. Being egocentric, impulsive, undependable and tough-minded were predictors of poor physical health and a shorter life. So loosen up and be nice to your fellow humans! (U.C. Davis Magazine, Fall 1995: 14).

Longevity at Last

While no one has suggested that taking supplements, eating vegetables or exercising can, as of yet, extend the human life span past the generally recognized limit of about 120 years, researchers believe they can improve your odds of living longer. An added benefit: By staying healthier, your old age won't only be longer, it will be more enjoyable, too.

And, who knows, if you hang around long enough, taking your nutrients and getting a comfortable amount of consistent exercise, while meditating and refusing to succumb to stress, that magic bullet that will keep you alive for centuries may be discovered. Some day a new antioxidant or other substance may finally prove to provide the elusive fountain of youth. Stay tuned.

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