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The study found that resveratrol, found in red wine, grapes and dark chocolate, may slow cognitive decline in Alzheimer's disease. The study was published in the journal Neurology.
Dr. R. Scott Turner, professor of neurology and director of the memory disorders program at Georgetown University Medical Center and his team created a purified form of resveratrol, which is being studied in both animal and human studies for preventing age-related conditions such as diabetes and cancer.
The team randomly assigned half of a group of 119 men to take up to 1,000 mg of resveratrol daily, and the other half to a placebo, for a year. All of the men had mild or moderate Alzheimer's disease. At the end of the year, Turner compared the men's scores on cognitive tests and assessments of how independent the men were in their daily living from the start of the study.
Turner explained that the resveratrol group showed no change in the levels of a protein that builds up in the brains of Alzheimer's patients.
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