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Researchers initially became interested in exploring the health benefits of Resveratrol when its presence was discovered in red wine. In France, consumption of red wine is much higher than in any other westernized society. They also eat a diet high in saturated fat, and smoke a lot. At the same time, their rate of heart disease is much lower. This led to the theory (the so-called "French Paradox") that regular consumption of red wine might provide additional protection from heart disease.
Research studies with mice have shown that Resveratrol seems to produce responses in your body that are similar to those you get from exercise, such as re-energizing cells and boosting endurance. Resveratrol also seems to be able to activate a longevity gene that may extend life span. Resveratrol is one of the few antioxidants that can cross your blood-brain barrier and protect your brain and nervous system from degenerative brain diseases such as Alzheimer's.
Resveratrol is a substance produced by grapes and other plants as a defense against environmental threats, such as molds, yeasts, and sunlight, among others. Therefore, the content tends to be the highest in grapes that grow under difficult conditions. Red wines have much higher levels than white wines because they are fermented with the skins, where much of the Resveratrol is.
Why Red Wine Is Not a Good Option
Keep enjoying your red wine, but don't count on it if you're looking for the benefits of this antioxidant. A 5-ounce glass of organic red wine provides less than 1mg., depending on many factors, including growing conditions. As mentioned above, non-organic wines may not have any resveratrol in them at all - you just don't know. A handful of peanuts provides about 70 mcg. (that's .07 mg), hardly any at all.
In order to get a similar dose given to the mice in these studies, you would have to drink far more wine than is possible - 5 gallons or more per day! So if you're not drinking already, this is probably not a good reason to start.
Other Drawbacks to Red Wine
Pesticides Reduce Resveratrol Content. Grapes sprayed with pesticides that prevent fungal infection contain little, if any, resveratrol. As mentioned above, grapes produce this antioxidant as a defense mechanism against fungi. If they are protected with the use of pesticides, the grapes don't need to produce as much.
Pesticides Also Increase Toxic Fluoride Content in Wine. A certain insecticide named cryolite has recently been linked to toxic levels of fluoride in Californian wines. Wine naturally contains fluoride, but application of cryolite seems to increase the levels significantly. To learn more about the hazards of consuming fluoride, look up the Fluoride Action Network at www.fluoridealert.net.
Other Food Sources of Resveratrol
Muscadine Grapes. Muscadine grapes have the highest concentration of all fruits because of their unusually thick skins and numerous seeds, where this antioxidant is concentrated. Compared to other grape seeds, muscadine grape seeds contain seven times the amount of resveratrol. Muscadine grapes contain more antioxidants than red wine grapes, pomegranates, cranberries or blueberries. However, much of the resveratrol content is in the seeds, which you would have to chew in order to get the full benefits; not an appetizing thought.
Resveratrol is also found in small amounts in peanuts, cocoa, blueberries, raspberries, blackberries and cranberries. None of these offer substantial amounts; red wine may be the only food source that has sufficient amounts to have any beneficial effect - and then only if it's grown organically.
The Easiest Way Get All the Benefits of Resveratrol
Supplements are Your Best Bet. The only sure way to obtain a certain amount of resveratrol daily is to take a standardized extract. Standardization ensures a consistent amount, with consistent high quality.
Most resveratrol supplements come not from grapes, but from extracts of the root of a plant called polygonum cuspidatum, also known as the Japanese knotweed. Supplements are often found in combination with red wine or grape seed extracts or other antioxidants.
Red Wine and Grapeseed Extracts. High quality supplements labeled as red wine and grapeseed extracts usually contain resveratrol and other flavonoids that naturally occur with it. Using a convenient extract in easy-to-take capsules means you can get the benefits of grape seeds without having to chew on bitter seeds.
Look for extracts made from muscadine grapes that uses grape skins and seeds. Muscadine grapes have the highest resveratrol content of any fruit. They also naturally contain a phytochemical profile with a broader range of health-supporting potential than other grapes.
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