Ginkgo biloba doesn't prevent dementia, study finds

[snopes]

Long touted as an elixir of eternal mental acuity, the herbal extract ginkgo biloba in fact does not prevent or delay the progression of dementia or Alzheimer's disease, according to a clinical trial involving thousands of volunteers between the ages of 75 and 96.

http://www.latimes.com/features/heal...,7138984.story