Resveratrol is a member of a group of plant compounds called polyphenols. These compounds are thought to have antioxidant properties, protecting the body against the kind of damage linked to increased risk for conditions such as cancer and heart disease. Resveratrol is found in the skin of red grapes, but other sources include peanuts and berries.
The new study included 46 men and women aged between 50 and 75 who took either 200 mg per day of resveratrol or a placebo for 26 weeks.
Data from memory tests and neuroimaging performed before and after the study period indicated that those who took the resveratrol supplements had better short-term recall and more connections among brain areas involved in memory than those who took a placebo.
Resveratrol supplementation was also associated with decreased levels of a substance called glycated hemoglobin (HbA1c), which is a marker of long-term presence of excess glucose in the blood, compared with placebo. Thus, say the scientists, sugar metabolism may be linked to brain connectivity and memory.
The study was published in the Journal of Neuroscience.
Brain and other benefits
Resveratrol, a powerful polyphenol and is often touted as the bioactive compound in grapes and red wine, and has particularly been associated with the so-called French Paradox …
Still, many doctors agree that something in red wine appears to help your heart. It's possible that antioxidants, such as flavonoids or a substance called resveratrol, have heart-healthy benefits.
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