The Big Picture The dietary guidelines advocated by the American Cancer Society and the National Cancer Institute (which generally coincide with those of most health organizations) may sound familiar: Eat plenty of fruits and vegetables. Get lots of fiber. Limit fat, especially animal fat. Go easy on meat and avoid the cured variety (they contain nitrites). If you drink alcohol, do it in moderation. Watch your total calories, and your weight. Pretty straightforward stuff.

Carotenoid Characteristics

Carotenoids, as their name suggests, are orange and red pigments in fruits and vegetables, most notably carrots and tomatoes, although they're also in everything from sweet potatoes to spinach and brussels sprouts (in the latter their distinctive color is masked by green chlorophyll).

Lycopene, a carotenoid found primarily in tomatoes, displays double the free radical-fighting activity of beta carotene, the most widely studied carotenoid. Of 72 studies looking at consumption of tomatoes or tomato-based products reviewed in the February 1999 Journal of the National Cancer Institute, almost half showed a significant reduction in one or more of a variety of cancers.

Research shows that lycopene may be best at lowering a man's risk of prostate cancer. A 1995 Harvard Medical School study (Journal of the National Cancer Institute 1995; 87: 1767-76) queried nearly 48,000 male health-care professionals about their consumption of fruits and vegetables. The only foods that reduced their risk of prostate cancer were, apparently, tomato sauce, tomatoes, pizza (tomato paste). For those who ate ten servings a week, risk dropped 45 percent; with four to seven servings, 20 percent. In animal studies lycopene decreased the number and size of mammary tumors (Eleventh International Symposium on Carotenoids, 1996).

Tomatoes are one of the richest sources of lycopene. Cooking tomatoes helps by releasing the lycopene from the plant cell walls. Also, the oil in tomato sauce enhances absorption in the stomach. Lycopene is also available in supplements.

Unreserved Resveratrol

Wine drinkers rejoiced when resveratrol, a constituent of the skin of red grapes, was found to protect their hearts (by blocking oxidation of LDL cholesterol and discouraging blood clotting). Now they have another reason to toast this potent antioxidant. When researcher John Pezzuto at the University of Illinois at Chicago screened about 1,000 plants for anticancer activity, he came up with one whose active ingredient turned out to be resveratrol. In lab tests it squelched both free radicals and inflammation, two well-known cancer inducers (Science, 6/10/97). In a study with mice, resveratrol reduced the number of skin tumors by up to 98 percent compared to control animals. Because the effective doses were high (Pezzuto estimates a person would have to quaff about five gallons of wine a day to get the equivalent) and because more than a drink or two a day may raise the risk of breast cancer, researchers don't recommend nondrinkers take up wine. But supplements of synthesized resveratrol (as well as grape juice) may help.

Fat Chance

Saturated fat is an authentic dietary villain. Aside from clogging arteries, it's a suspected contributor to several cancers, though the evidence is greater for some cancers (prostate) than for others (breast cancer)

Of the two other main categories of fats, monounsaturated and polyunsaturated, mono seems benign, if not positively protective. For example, in a study of the influence of diet on breast cancer, Greek researchers discovered that women who consumed higher amounts of olive oil (which is mostly mono) were less likely to be afflicted with breast cancer (Journal of the National Cancer Institute 1995: 87; 110-116).

When it comes to polyunsaturated fats, however, things get complicated. The fat that predominates in corn, sunflower and other vegetable oils, called omega-6, has long been associated with cancer risk in animal experiments. Likewise the type found in margarines, trans fats, which are partially saturated vegetable oils. On the other hand, the omega-3 fats called EPA and DHA, which are found primarily in deep- and cold-water fish like cod, mackerel, and halibut, protect against both heart disease and cancer. In an epidemiological study covering 24 European countries, British researchers established that mortality rates for colon and breast cancers declined as fish and fish oil consumption rose (British Journal of Cancer 1996: 74; 159-64). And Finnish scientists discovered that the breast tissue of women who had breast cancer contained significantly less DHA and EPA than the breasts of healthy women (Nutrition and Cancer 1995: 24; 151-160).

Experts believe the omega-3s' anticancer effect derives from its ability to tamp down the prostaglandins that stimulate inflammation. Chronic inflammation unleashes a steady stream of free radicals, which can damage DNA and thereby trigger cancer. Omega-3s also help the liver detoxify potentially harmful substances.

Fortunately for the fish-phobic, nonmarine sources of omega-3 fats include flaxseed and hemp oils.

Minerals to Lower Cancer Risk

n Calcium: possibly protective against colon cancer. In a recent trial (New England Journal of Medicine, 1/14/99) researchers gave people with a history of precancerous colon polyps either two 600 mg calcium tablets a day or a placebo for nine months and found fewer polyps. n Selenium: powerful antioxidant and supporter of immunity. Researchers find that cancer rates in various regions is lowered when soil and vegetables contain more selenium

In a selenium-depleted area in China afflicted with one of the highest incidences of stomach and esophageal cancer mortality in the world, scientists asked different groups to take various combinations of nutrients. After five years they found a significant reduction in the cancer rate among those who had gotten supplements of selenium, vitamin E and beta carotene (Biological Trace Element Research 1985; 7: 21-29). In the U.S. researchers studying the potential effectiveness of selenium supplementation for preventing nonmelanoma skin cancers came up with a surprise. The 200 mcg a day the subjects received for an average of 4.5 years had no impact on skin cancer but did significantly cut the rates of lung, colorectal and prostate cancers (Journal of the American Medical Association, 12/25/96).

More recently Harvard researchers determined that men with prostate cancer had much lower levels of selenium in their toenails (a measure of consumption) than healthy men (Journal of the National Cancer Institute, 8/119/98).

Cruciferous Vegetables

Cruciferous vegetables like broccoli, brussels sprouts, cauliflower and kale, have long been singled out for their association with protection against cancer. In a 1996 survey of 94 population studies and clinical trials focusing on consumption of cruciferous vegetables, 67 percent showed a reduced risk, the strongest link being with lung, stomach, colon and rectal cancers (Cancer Epidemiological Biomarkers 1996; 5: 733-748).

Scientists at Johns Hopkins showed that sulforaphane, from these plants, stimulates enzymes that help detoxify carcinogens generated in the liver. When they injected rats with a cancer-causing chemical, only 26 percent of the rodents pretreated with sulforaphane developed mammary cancer, compared to 68 percent of controls. Even animals who did come down with cancer had tumors that appeared later and smaller.

Other researchers have focused on a cruciferous-vegetable compound called indole-3-carbinol, which has proved especially effective against breast cancer cells. Recently, scientists at the University of California at Berkeley found that indole-3-carbinol, rather than acting as an anti-estrogen, (as had been thought), actually stops breast cancer cells by turning off a protein critical to their replication (Jrnal of Bio Chem, 2/13/98). Consequently, when treating certain forms of cancer, some doctors have paired indole-3-carbinol with the chemotherapy drug tamoxifen - which counteracts estrogen - and found that the combination has proven more potent than either separately.

Fiber

Several decades ago British physician Denis Burkitt proposed that the low incidence of colon cancer among native peoples in South Africa was attributable to the fact that their diet was rich in fiber. The fiber, it was hypothesized, bulked up the stool, speeding its passage through the bowel and reducing the time carcinogens contact its lining; it also helped neutralize cancer-promoting bile acids.

This concept has been backed up by numerous studies. Recently, Harvard researchers sprinkled cold water on this idea, finding that an examination of the eating habits of more than 80,000 female nurses, could find no protective effect against colon cancer or precancerous polyps from consuming fiber (NEJM, January 21, 1999). Most experts' take on this apparent refutation: Maybe the "high fiber" intake in this case wasn't high enough, and this is just one study among many.

Fighting Breast Cancer

Fiber has also been linked to reduced rates of breast cancer. At first it was thought that if fat was a breast-cancer culprit, fiber might just be a marker for a low-fat diet. But a look at Finland undermined that idea: Finnish women eat both a lot of fat and a lot of fiber, and their breast cancer rate ranks much below that in the U.S., (where we eat gobs of fat and little roughage).

Fiber helps take estrogen out of circulation as it passes through the liver, while the isoflavones in many high-fiber plants and vegetables are themselves weak estrogens, which compete for slots on breast tissue's estrogen receptors. The special fiber in flaxseed oil called lignans act against estrogen in two ways: by binding its receptors and by inhibiting the enzyme that converts other hormones into estrogen.

Fiber comes in two basic forms, insoluble (e.g., wheat bran, celery, the skins of fruits and vegetables) and soluble (e.g., oat bran, citrus fruits, beans). Until a few years ago, scientists believed that cancer protection came mainly from insoluble fiber, but that thinking has turned around.

A soluble fiber called citrus pectin has been shown to halt the tendency of prostate, lung, breast and skin cancers to metastasize, or spread (e.g., Journal of the National Cancer Institute 1995; 87: 3448-353). Typically cancer turns deadly only when it gets into the bloodstream and invades new territory. Modified citrus pectin appears to stop this aggression by preventing cancer cells from attaching to healthy tissue.

Novel Antioxidant

While the name inositol hexaphosphate (IP6) sounds like a mouthful, many of us consume mouthfuls of this natural substance every day - in foods like corn, rice, whole-grain cereals, oats and wheat.

But now scientists have isolated IP-6 and found that this powerful antioxidant can slow the destructive cellular processes that lead to tumors. In a study published in Anti-Cancer Research (Nov/Dec 1998), scientists at the University of Maryland School of Medicine demonstrated that IP-6 could shrink liver tumors in laboratory animals.

The researchers believe that IP-6 can help prevent cancer and also be useful in lowering the risk of health problems like kidney stones and heart disease. Research like this continues to expand our knowledge of how to lower the risk of cancer. In the next millennium, with more and more information making its way into the media and onto websites, our power and the responsibility to reduce our risk of cancer will continue to grow and offer new possibilities.

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Vitanet ®

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Date: June 10, 2005 03:01 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Basics of the Immune System

Basics of the Immune System

by Leonid G. Ber, MD Energy Times, September 1, 1998

In a world filled with pathogens and microbes, good health and resistance to disease is no accident. It requires a vigorous and vigilant immune system. The immune system should be viewed as an internal security force that is constantly checking the identity of everything entering and already existing in the body. A cell or substance may be recognized as "non-self" and a potential Enemy if it does not have the right molecular make-up. A cell displaying molecules produced according to a different blueprint than the body's own code may be recognized as foreign. To eliminate alien material that may harm the body, the immune system must take swift action.

Recognizing entities that originate outside the self forms the key to overall immune system response. This key is carried in the body by cells called macrophages (ma-kro-fajs), a name derived from a Greek term meaning "big eater." Macrophages eat or engulf foreign cells and molecules. When a macrophage encounters something that it distinguishes as being "non-self" or abnormal, it can attack the Enemy with a series of assault weapons, including free-radicals (reactive substances) and enzymes, that dissolve and weaken the intruder. In fact, an enzyme produced by macrophages called lysozyme is recognized as one of nature's most powerful anti-infective agents. These chemical defenses, along with engulfment and complete digestion by macrophages, can effectively stymie invasion by disease-causing pathogens.

Disease Invasion

Harmful invasion can originate in the body's own cells as well as begin from outside sources. While we are constantly exposed to bacteria, viruses, fungal cells and parasites, destructive cancerous growths often start within the body.

Every day, thousands of the body's cells mutate into possible cancers. Under most circumstances, the immune system keeps these cells under control. But when the immune "security" system slips up, these harmful growths multiply unrecognized.

Getting Specific

The initial immune response that recognizes invaders is called a "non-specific defense mechanism" since this immune response is generally the same toward all invaders. This counter-attack entails battling every invader pretty much identically: a macrophage can engage, dissolve, weaken, engulf, digest, eliminate. However, if, despite the initial immune efforts, the problem persists, a macrophage can tag an invader and "introduce" it to the rest of the immune system, thus recruiting more specialized types of immune cells to enter the battle. This tagging function endows macrophages with the name "antigen-presenting cells." (Antigens are substances that can provoke specific responses by the immune system.)

Most antigens are proteins. Proteins are relatively large molecules made of smaller units called amino acids. The specific geometric organization of amino acids is what conveys uniqueness to each protein. (Your genetic code forms a blueprint for the production of your own, individual proteins.) Protein molecules produced by one human being can act as an antigen for another human being. That's why organs transplanted from one person to another can be rejected by the immune system. Unless organs are transplanted from one identical twin to another (who share the genetic blueprint for protein creation), doctors must use immune-suppressing drugs to curtail organ rejection. At the same time as these medicines prevent transplant rejection, they also make people more susceptible to infectious diseases and cancer.

Specialized Immunity

After one set of immune cells chemically tags antigens (invaders) for recognition, other highly specialized parts of the immune system go into action: Cells called T cells or T lymphocytes acknowledge the invaders and can take the further action (second line of defense) that is necessary to render them harmless.

T cells get their name from the thymus (an organ located behind the sternum) where they originate. The thymus, most active when we're young, usually shrinks and apparently slows or shuts down its activity about the age of forty.

A wide variety of T cells inhabit lymph nodes (soft, usually round, pea- or nut-sized organs) and other body areas. For instance, natural killer cells, as their name implies, are a particularly aggressive type of T cell. Another type of T cell is called T helper (a cell that supports development of immune response). T suppressors halt immune response when infection ends.

In order to make all these different cells work in concert, cytokines or messenger molecules are produced that facilitate constant communications between all the parts of the immune system.

The B Team

Other organs of the immune system include:

*bone marrow: a powerful cell producing organ where the majority of immune cells are born;

*spleen: an abdominal organ that forms a reservoir for the production of immune cells.

Lymph nodes oversee particular segments of the body where they collect and recycle tissue fluids. Like an early warning system, lymph nodes react when an invader is detected in the part of the body that it controls.

Yet another step in the so-called immune cascade entails action by lymphocytes, called B cells, which originate in the bone marrow. These cells produce antibodies which are immune proteins (immunglobulins) that attack specific antigens.

While traveling in the blood, an antibody can bind to an antigen, curtailing its harmful action. This bound up molecule forms a complex easily recognized by scavenging macrophages which make a quick meal out of the unlucky invader.

After Enemy cells are removed from the body, knowledge of this victory resides in the immunological memory prolonging your resistance toward specific disease pathogens indefinitely. That's why someone who has recovered from a disease like the measles may be impervious to reinfection.

Rules for Optimum Immunity

Even though the immune system consists of a complex team of hard-working cells, enhancing your immunity is relatively easy:

Maintain a healthy lifestyle. Avoid continuous stress and negative emotions or cope with them through exercise or meditation. Consistent, moderate exercise can boost the immune system. Massage can also help although extreme care must be taken when inflammation or disease is already present.

Sleep 7-8 hours a day. Sleep allows the body to recover and rebuild. Protein synthesis, vital for a healthy immune system, increases during the night.

Stick to a healthy diet. Your immune system consists of trillions of cells. Consequently, nutrients important for cell health boost the immune system. A balanced low-calorie diet rich in complex carbohydrates, "good" fats (including fish oils, olive oil and flaxseed oil) along with vitamins, minerals and phytonutrient antioxidants from fresh fruits and vegetables can fortify immune cells. Plus, drinking plenty of water helps improve circulation of lymph fluid.

These recommendations are not hard to meet once they become a part of your daily routine. However, extra immune security may be necessary during flu season, while traveling long distances (airplanes are notorious sources of pathogens) or when working extensive hours in front of a computer screen. In addition, exposure to x-rays, immunosuppressive chemicals, ultraviolet radiation (the sun) or simply aging may give your immune cells extra burdens.

Your "specific" immune system does not respond immediately to the challenge of invasion by an infectious organism. Instead, it may require about 2 weeks for an effective reaction after antigen recognition and alerting T cells. During this period, the macrophages' non-specific defense assumes a crucial role in keeping infection in check.

Enhanced activity by macrophages is especially important for recognizing and destroying cancer cells. The most dangerous cancers are those that can mimic normal cells and avoid the immune system's wrath. Few substances can activate macrophage function in the body (aloe vera contains substances that contribute to this process). The most powerful macrophage activator recognized by the scientific community is a sugar-like substance called beta-1,3-D-glucan. Beta-glucan, extracted from the cell walls of common Baker's yeast, when taken in certain small amounts, can prevent infection by making macrophages more active in recognizing and attacking infectious bacteria, fungi and certain viruses.

This kind of activation can encourage macrophages to attack previously unrecognized tumor cells. As a result, tumors may be eradicated as the immune system mobilizes and produces what may be known as "spontaneous healing."

Hungry Macrophages

When a macrophage works overtime fighting disease, its demand for nutrients and energy increases dramatically. Vitamin C, known for its immune supporting function, seems to be especially important for maintaining fully active macrophages. Vitamin C collects in macrophages, often reaching forty times the concentration found in surrounding blood. What are conventionally considered normal amounts of vitamin C in the body may be insufficient to keep macrophages well supplied with this antioxidant. Therefore, extra amounts of vitamin C can keep the immune system in fighting trim.

Scientists are only now beginning to uncover the secrets of the highly organized immune system. One thing's certain: The immunity security team depends on proper lifestyle, nutrition and supplements to maintain the critical defenses necessary for good health.

Dr. Ber received his doctorate in internal medicine from the Yaroslavle, State Medical Institute in Yaroslavle, Russia.

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VitaNet ®
VitaNet ® Staff

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Date: June 10, 2005 02:48 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Cross Training

Cross Training

by column Energy Times, April 1, 1999

If you've ever felt burned out, bored and/or just plain tired of your exercise program, you may be in need of a taste of cross training. When your exercise routine becomes too routine, you run not only the risk of losing your motivation for physical activity, but you may also run an added chance of injury. The possible cause: overusing particular muscles that receive an excessive amount of stress as other muscles practically atrophy while waiting for a chance to show off their stuff.

For instance, if you are a devoted runner who spends hours jogging, your upper body may wither unless you give it a reason not to. At the same time, your achilles, hamstrings, knees and lower back muscles may protest those miles after miles. As Frank Jobe, MD, Neal EllAttrache, MD, and Karen Mohr, PT, point out in Athletic Forever (Contemporary), "Dedicated runners are among the most injury-prone of all athletes. If running is your main form of exercise, you have a 37 to 56 percent chance of sustaining an injury each year and your chances for a recurrence of that injury are as high as 70 percent."

Simple Principle

The basic principle of cross training is simple: take part in various activities that supplement each other. Runners should lift some weights or at least shoot a few hoops to keep those arms and shoulders toned. Bikers should walk or run now and then to keep their bones healthy. (Bicycling, since it is not a weight bearing exercise, does little to promote bone strength.) Swimmers should find something to do on dry land so that their bones react to gravity and grow stronger. And, no matter what your sport, you should stay well-nourished and supplied with plenty of antioxidants.

As Stephen T. Sinatra, MD, points out in Optimum Health (Bantam), while athletes may enjoy health benefits from exercise, "The vigorous training pursued by competitive athletes renders them more prone to catabolic stress-a situation in which tissues are constantly broken down."

He goes on to point out that the low fat diet many athletes follow may be short of antioxidant nutrients. Unfortunately, that shortage can lead to injury. The metabolic acceleration caused by athletic activity may increase potentially harmful oxidative stress at the cellular level. Without antioxidant nutrients to help quell that stress... Well, the results may not be pretty. Potentially, that kind of oxidative damage may, theoretically, lead to cancer or heart disease. As Dr. Sinatra says, in those circumstances, "the supplemental use of glutathione, vitamins C and E, coenzyme Q10 and magnesium seems reasonable. Some athletes, such as menstruating women, may also need iron supplementation."

In addition, water is crucial for athletes to stay adequately hydrated during activity. According to Daniel Gastelu and Fred Hatfield, PhD, in Dynamic Nutrition for Maximum Performance (Avery), when you run short of water "this can adversely affect performance and, in the long run, can cause peaks and valleys in the athlete's performance." In addition, they advise using sports drinks to stay adequately supplied with electrolytes. "The major electrolytes found in bodily fluids are chloride, magnesium, potassium and sodium."

Electrolytes serve a host of duties, including keeping the heart muscle functioning properly. Gastelu and Hatfield explain, "An electrolyte is an ion that is required by the body to regulate the electric charge and flow of water between the cells and the bloodstream."

Getting Better All the Time

Even if you cross train religiously and try to avoid overdoing one particular sport, sooner or later you may incur injury. If you do (or even before you hurt yourself), the trio of Stanley W. Jacob, MD, Ronald M. Lawrence, MD, PhD, and Martin Zucker, authors of The Miracle of MSM (Putnam), believe that methylsulfonylmethane (MSM) can provide reliable relief for pain and suffering.

"Many people experience rapid relief after starting MSM," say this trio. They go on to claim that "this nutritional supplement has real potential to make a significant impact on the quality of life."

"Your main Enemy in the hours following an injury is inflammation," warns Athletic Forever. For injury, they recommend RICE: rest, ice, compression and elevation. In other words, put the injured body part in a firmly wrapped bandage (don't cut off the circulation!) Keep the injury cold but don't put ice directly on it (watch out for frost bite). Rest a while and keep the injury elevated. Then, don't exercise again until you've fully recovered.

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VitaNet ®
VitaNet ® Staff

(https://vitanetonline.com:443/forums/Index.cfm?CFApp=1&Message_ID=267)

Date: June 01, 2005 12:20 PM
Author: Darrell Miller (dm@vitanetonline.com)
Subject: Diet Pyruvate - Get the Look Naturally ...

Diet Pyruvate

Ideally, a perfect diet would allow you to lose excess body fat, but not lean body mass. Why? Because most experts now agree that the body’s Enemy is fat and not weight. Your body composition is capable of changing dramatically without any significant change in weight. It’s simply a matter of body mass redistribution. Fat is lost. Muscle is gained. A new leaner shape emerges. Introducing Source Naturals Diet Pyruvate Powder. A promising new study indicates six or more grams of Pyruvate powder a day may reduce body fat, increase lean body mass, and improve body composition when taken in conjunction with a low-fat diet and exercise plan. Imagine the possibilities.

Pyruvate has a key role in your body’s metabolism and the energy production process. It is the link between the two main energy generating cycles, glycolysis (anaerobic metabolism) and the Krebs cycle (aerobic metabolism). In essence, it is here that the body creates and disseminates energy from the proteins, fats and carbohydrates that we ingest. Pyruvate occurs naturally in our bodies. It is produced as our systems absorb and process the carbohydrates in food to create glucose. Glucose is the body’s high-performance fuel. It is what drives our muscles and gives us endurance. Glucose is converted into Pyruvate, which then becomes a crucial part of the energy producing process. Pyruvate is found in some of the foods we eat today, but in very small amounts.

THE POWER OF PYRUVATE.

Diet Pyruvate may have an especially significant role when taken in conjunction with a healthy diet and exercise program, such as the Source Naturals Maximum Metabolism Weight Loss Plan™. Pyruvate has a strategic purpose in the energy production process. Pyruvate is found in a variety of foods, but most contain less than 25 mg per serving. Diet Pyruvate is made of the finest Calcium Pyruvate Monohydrate, manufactured by Med-Pro Industries using a unique, patented process to ensure stability and high purity.

SOURCE NATURALS DIET PYRUVATE PRODUCTS INCLUDE:

Diet Pyruvate in capsule form containing 500 and 750 mg of Calcium Pyruvate Monohydrate, Diet Pyruvate in 3 oz. powder form in which one teaspoon contains approximately 3 grams of Calcium Pyruvate Monohydrate, and Diet Pyruva-Nectar™ in a delicious 16 oz. flavored drink mix form of Calcium Pyruvate Monohydrate. Here is a simple and natural program that may help you in reaching healthy weight and body composition goals, when taken with the Maximum Metabolism Weight Loss Plan. Source Naturals wants to help you achieve the look you’ve always imagined. So set your goals, and get the look. Safely. Naturally.

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