Study: No evidence ginkgo slows mental decline

December 29, 2009 Researchers studied over 3,000 older adults with normal mental functioning or with mild mental impairment. Some participants received the supplement and others got a placebo. All were then followed for six years.

Results in the Journal of the American Medical Association showed those actually taking ginkgo biloba had no improvement in memory or attention. Additionally, gingko showed no benefits in reducing dementia.

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