Research on resveratrol may someday lead to improved health and extended life. However, it appears that there is no link between dietary resveratrol levels and the rates of heart disease, cancer, and death in humans. Taking resveratrol supplements comes with some risks. The safe, effective dose for humans is unknown. It is also unknown how long-term use will affect people for better or for worse. People taking a resveratrol supplement, or those who plan to, should let their doctor know.
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