In case you missed the news today, it has been widely reported that a study on Ginkgo Boloba and Alzheimers (AZ) did not turn out as favorably as hoped. It had been hoped that by taking GB, you could prevent or delay the dementia that is associated with AZ.
3069 people had participated in the trial. Just about 1/2 were given GB and 1/2 were given a placebo. Neither the people or the doctors doing the testing knew who was taking what. A double blind study, as explained prior, and the number of participants lends a lot of credibility to the study.
There is some question if the study followed the exact GB protocols.
As with any study, one does not mean anything is cast in stone. There is another study going on in France with 2800 participants. I think it is safe to say the GB community is certainly looking forward to a favorable report.