Complementary Health Approaches

Frequently Asked Questions

18. What has NIH-sponsored research shown about the use of Ginkgo biloba for preventing cognitive decline and Alzheimer’s disease?

In the NIH-sponsored Ginkgo Evaluation of Memory (GEM) study, which was a 6-year trial of Ginkgo biloba in more than 3,000 older adults, ginkgo did not prevent Alzheimer’s disease or other types of dementia, or slow cognitive decline.