New Doubts About Ginkgo Biloba

Millions of Americans take ginkgo biloba supplements to boost memory and prevent dementia. Studies have never found any solid evidence that ginkgo does any such thing, but it did not seem to be doing much harm.

But last month, scientists released the first government toxicology study of ginkgo biloba, which found that the extract — one of the top-selling herbal supplements in the country — caused cancer in lab animals, including an excessive number of liver and thyroid cancers, as well as nasal tumors.

Read the story at nytimes.com