Summary
Resveratrol (3,5,4′-trihydroxy-trans-stilbene) is a stilbenoid, a type of natural phenol, and a phytoalexin produced by several plants in response to injury or when the plant is under attack by pathogens, such as bacteria or fungi. Sources of resveratrol in food include the skin of grapes, blueberries, raspberries, mulberries, and peanuts. Although commonly used as a dietary supplement and studied in laboratory models of human diseases, there is no high-quality evidence that resveratrol improves lifespan or has a substantial effect on any human disease. Resveratrol has been studied for its potential therapeutic use, with little evidence of anti-disease effects or health benefits in humans. There is no evidence of benefit from resveratrol in people who already have heart disease. A 2018 meta-analysis found no effect on systolic or diastolic blood pressure; a sub-analysis revealed a 2 mmHg decrease in systolic pressure only from resveratrol doses of 300 mg per day, and only in diabetic people. A 2014 Chinese meta-analysis found no effect on systolic or diastolic blood pressure; a sub-analysis found an 11.90 mmHg reduction in systolic blood pressure from resveratrol doses of 150 mg per day. there is no evidence of an effect of resveratrol on cancer in humans. There is no conclusive evidence for an effect of resveratrol on human metabolic syndrome. One 2015 review found little evidence for use of resveratrol to treat diabetes. A 2015 meta-analysis found little evidence for an effect of resveratrol on diabetes biomarkers. One review found limited evidence that resveratrol lowered fasting plasma glucose in people with diabetes. Two reviews indicated that resveratrol supplementation may reduce body weight and body mass index, but not fat mass or total blood cholesterol. A 2018 review found that resveratrol supplementation may reduce biomarkers of inflammation, TNF-α and C-reactive protein. There is insufficient evidence to indicate that consuming resveratrol has an effect on human lifespan.
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