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Resveratrol is a polyphenol compound that is believed to have antioxidant properties.

What Resveratrol Does For The Body

Resveratrol is thought to decrease the risk of heart disease, type 2 diabetes and age-related woes, such as cataracts and bone loss. It may also help raise levels of the "good" cholesterol known as HDL.

By activating enzymes that deliver oxygen to muscles, resveratrol may also increase levels of energy and physical endurance as well. Still, more research is needed to support these optimistic findings.

What happens if you don't have enough resveratrol: The jury is still out. More studies are needed.

What happens if you have too much: There are no known adverse reactions associated with a surplus of resveratrol, since the compound is quickly metabolized by the body. Any excess is naturally eliminated. But that doesn't mean that it's OK to finish a bottle of Merlot without any help.

The American Heart Association recommends a limit of one drink per day for women and two drinks for men. Just to be super-safe, women who are pregnant or breastfeeding should not take resveratrol supplements.

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