Autoimmune diseases are characterized by the body's immune responses being directed against its own tissues, causing prolonged inflammation and subsequent tissue destruction. Autoimmune disorders can cause immune-responsive cells to attack the linings of the joints--resulting in rheumatoid arthritis--or trigger immune cells to attack the insulin-producing islet cells of the pancreas leading to insulin-dependent diabetes.
Oxidative stress plays a role in autoimmune diseases. It can be compared to a piece of metal rusting and results from the action of damaging molecules known as free radicals that are a natural byproduct of the body's metabolism. The electrically charged free radicals attack healthy cells, causing them to lose their structure and function and eventually destroying them. Free radicals are not only produced by our bodies, but they are also ingested from toxins and pollution in the air we breathe.
Antioxidants are a broad group of compounds that destroy or neutralize free radicals in the body, thereby protecting against oxidative damage to cells caused by the normal aging process or daily exposure to pollutants and toxic substances. Antioxidants are found naturally in healthy food, especially fruits and vegetables. The most effective of the antioxidants include vitamin C, vitamin E, green tea extract, beta-carotene, grape seed-skin extract, coenzyme Q10 (CoQ10), and selenium.
- Vitamin C may be the most important water-soluble antioxidant, having an ability to scavenge both reactive oxygen and nitrogen radicals. In controlled studies, vitamin C has demonstrated antiatherogenic, anticarcinogenic, antihistaminic, and immunomodulatory benefits.
- Vitamin E is a fat-soluble, essential nutrient for humans. Increased risk for coronary artery disease, Alzheimer's disease, and cancer has been reported in regard to vitamin E deficiency.
- Green tea belongs to the flavonoid family. Green tea catechins are potent free radical scavengers and have also demonstrated anticarcinogenic, anti-inflammatory, antiatherogenic, and antimicrobial activity.
- Beta-carotene is a dietary precursor to vitamin A. Beta-carotene has demonstrated immunomodulatory effects in male nonsmokers and has demonstrated increased lymphocyte counts in healthy male smokers. Beta-carotene's antioxidant activity may prevent oxidative damage to DNA and inhibit lipid peroxidation.
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*This supplement should be taken in conjunction with a healthy diet and regular exercise program. Results may vary.