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Ginkgo fails in dementia and Alzheimer's

Taking supplements of Ginkgo biloba does not reduce the rate of dementia or Alzheimer's disease, according to the results of new US research.

A study of 3,609 volunteers aged 75 or older with either normal cognition or mild cognitive impairment were assessed every six months for a median of 6.1 years for development of the symptoms of dementia. Participants in the study were randomised to either ginkgo or placebo.

Some 17.9% in the intervention group and 16.1% in the placebo group developed dementia. The rates of dementia or Alzheimer's disease did not differ between the groups.

JAMA 2008; 300:2253-262

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