(03-04-11) Antioxidants contribute to longevity

by Amy Chaves


(NaturalNews) A critical review of the role of dietary antioxidants suggests
that Vitamin A and E, along with coenzyme Q10, flavonoids, and resveratrol,
show promise in extending human life. The review, which was published in
Critical Reviews in Food Science and Nutrition, and authored by Chong-Han
(2010), examined current studies on antioxidants and their implications in the
aging process with the conclusion that these antioxidants may contribute to
longevity.

Antioxidants are substances that reduce oxidative damage in cells caused by
free radicals. Free radicals are molecules produced when the body breaks down
food or by environmental exposure like tobacco smoke and radiation. Free
radicals are responsible for aging, tissue damage, and diseases like heart
disease and cancer (Medical Dictionary).

The following antioxidants reviewed by Chong-Han show promise in extending
human life:

Vitamin A. Vitamin A, also known as retinol, has been called the "anti-
infective" vitamin for its role in supporting the immune system. This vitamin
is essential in protecting the retina and lens from damage generated by light
and metabolism. Carotenoids, which are pre-formed vitamin A found in plants,
are found to be determinants of longevity and cancer. Supplementation of this
vitamin showed improvement to lifespan in mice only when started in the
beginning of life.

Best sources: Carrots, spinach, sweet potato, kale, turnips, squash, collard
greens, bell peppers.

Vitamin E. One of the most widely researched antioxidants, vitamin E is also
found to extend life in mice when initiated in early years, just like vitamin
A. Vitamin E may protect older healthy individuals against atherogenesis
(formation of thick plaque of cholesterol and other lipids in arterial walls),
improve relearning ability, and reduce cancer formation.

Best sources: Sunflower seeds, almonds, olives, spinach, papaya, swiss chard,
mustard greens.

Coenzyme Q10. Coenzyme Q10 (Q10) is the only known bodily-synthesized
antioxidant; thus, its toxicity rate may be less when compared with vitamins A
and E supplementation. It extends life by reducing oxidative damage, thereby
lowering cardiovascular risk and inflammation. It is known to prevent photo-
aging on the skin and may offer protection caused by simvastatin therapy. Q10
is the primary homologue (feature) found in longer-living mammalian species,
including human beings.

Best sources: Fish, germs of whole grains.

Flavonoids. Flavonoids are the most common group of polyphenolic compounds in
the human diet and are found mostly in plants. Green tea supplementation has
been found to protect against oxidative stress and can increase antioxidant
ability in rat brain. The green tea catechin prevents damage in aging mouse
brain and liver damage in rats caused by aging and ethanol. Another flavonoid,
anthocyanins, has also shown protection against vascular disease.

Best Sources: Berries, green tea, and virtually all fruits, vegetables, herbs,
spices.

Resveratrol. Resveratrol is a polyphenolic compound found in grapes, red wine,
purple grape juice, peanuts, and some berries. Evidence from the "French
Paradox" and from controlled studies point to its effectiveness in extending
life. It has also been associated with improved bone density, motor
coordination, cardiovascular function, and in delaying cataracts. Other studies
also show that it offers protection against Alzheimer`s disease and prolongs
lifespan as well as retards aging.

Best sources: Grapes, wine, peanuts, fermented soy.

Thus, to get the benefits of health and longevity, one`s diet should comprise
plant foods and this diet should begin early in life.

[Editor`s Note: NaturalNews is strongly against the use of all forms of animal
testing. We fully support implementation of humane medical experimentation that
promotes the health and wellbeing of all living creatures.]

References:

Chong-Han, K. (2010). Dietary lipophilic antioxidants: Implications and
significance in the aging process. Critical Reviews in Food and Nutrition, 50,
931-937.

Medical Dictionary. Retrieved from http://www.medterms.com/script/main...

The World`s Healthiest Foods. Retrieved from http://www.whfoods.com

News

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