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RESVERATROL
What does it do? Resveratrol, a compound found primarily in red wine, is a naturally occurring antioxidant. In test tube and animal studies, resveratrol decreased the “stickiness” of blood platelets and helped blood vessels remain open and flexible.1 2 3 A series of laboratory experiments suggested that resveratrol inhibits the development of cancer in animals and prevents the progression of cancer.4 In other animal studies, resveratrol was shown to be an effective anti-inflammatory agent.5 However, human research is still needed in all of these areas.
Where is it found? Resveratrol is present in a wide variety of plants—of the edible plants, mainly in grapes and peanuts.6 Wine is the primary dietary source of resveratrol. Red wine contains much greater amounts of resveratrol than does white wine, since resveratrol is concentrated in the grape skin and the manufacturing process of red wine includes prolonged contact with grape skins. Resveratrol is also available as a dietary supplement.
Resveratrol has been used in connection with the following conditions (refer to the individual health concern for complete information):
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Atherosclerosis |
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and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies
suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or
the herb or supplement has little scientific support and/or minimal health benefit. |
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Who is likely to be deficient? Since it is not an essential nutrient, resveratrol is not associated with a deficiency state.
How much is usually taken? An 8-ounce glass of red wine provides approximately 640 mcg of resveratrol, while a handful of peanuts provides about 73 mcg of resveratrol. Resveratrol supplements (often found in combination with grape extracts or other antioxidants) are generally taken in the amount of 200–600 mcg per day. This is far less than the amount used in animal studies to prevent cancer: equivalent to more than 500 mg (500,000 mcg) per day for an average-sized human. Therefore, one should not assume that the small amounts found in supplements or food would necessarily be protective. The optimal level of intake is not known.
While a moderate intake of red wine may protect against heart disease, the optimal amount required to produce this effect is still unknown. Due to the risks involved with drinking alcohol, drinking red wine cannot be recommended as a means of preventing heart disease until more information is known.
Are there any side effects or interactions? No side effects have been reported with the use of resveratrol.
References:
1. Bertelli AA, Giovanninni L, Bernini W, et al. Antiplatelet activity of cis-resveratrol. Drugs Exp Clin Res 1996;22:61–3.
2. Chen CK, Pace-Asciak CR. Vasorelaxing activity of resveratrol and quercetin in isolated rat aorta. Gen Pharmacol 1996;27:363–6.
3. Pace-Asciak CR, Rounova O, Hahn SE, et al. Wines and grape juices as modulators of platelet aggregation in healthy human subjects. Clin Chim Acta 1996;246:163–82.
4. Jang M, Cai L, Udeani GO, et al. Cancer chemopreventive activity of resveratrol, a natural product derived from grapes. Science 1997;275:218–20.
5. Jang M, Cai L, Udeani GO, et al. Cancer chemopreventive activity of resveratrol, a natural product derived from grapes. Science 1997;275:218–20.
6. Soleas GJ, Diamandis EP, Goldberg DM. Resveratrol: A molecule whose time has come? And gone? Clin Biochem 1997;30:91–113.
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