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Views on aging are changing. Learn about research to identify benefits and risks of antioxidants, calorie restriction, hormone supplements, and other interventions to promote healthy aging. ... Details >

National Institute on Aging Information Center

Answers basic questions about the antioxidant vitamin A, such as what it is, what foods provide it, and what intake is needed to provide the recommended dietary allowance.... Details >

Office of Dietary Supplements, National Institutes of Health

Particular compounds called polyphenols found in red wine—such as catechins and resveratrol—are thought to have antioxidant or anticancer properties. Read what the studies have found. ... Details >

National Cancer Institute

Also available in: Spanish 

How much Vitamin E do I need? What foods provide Vitamin E? What are some of the effects of Vitamin E on my health? Read on to find the answers to these, and other related questions.... Details >

Office of Dietary Supplements, National Institutes of Health