Ginko Biloba no help in preventing Alzheimer's

It's one of the things you think about as you get older - staying mentally sharp and doing as much as you can to reduce the risk of Alzheimer's disease. That's why so many people take the herbal supplement Ginko Biloba.

Unfortunately, there's just no science to back up the marketing claims.

A new French study shows once again that Ginko does not reduce the risk of Alzheimer's. Researchers followed nearly 3,000 people over the age of 70 who had complaints about memory problems. The result:

"It had absolutely no effect better than placebo in terms of brain function," says Dr. John Swartzberg at the U.C. Berkeley Wellness Letter.

Swartzberg tells me there have been some promising animal studies involving Ginko. It's the human studies that are disappointing.

"When we've looked at humans with Ginko, repeatedly now, there's just no evidence that it's going to help."

It has been shown that exercise, a good diet - that means lots of fruits and vegetables - and healthy weight will help your brain. They're also good for your heart.