A Chinese herb claimed to improve memory and mental sharpness is not able to prevent Alzheimer's disease, scientists have found.
Researchers in France tested the effect of Ginkgo biloba on more than
2,800 elderly volunteers who took the supplement over five years. Half the participants, who were all aged 70 or older, were given
twice-daily doses of Ginkgo and half received an inactive placebo.
During the trial, rates of dementia and Alzheimer's symptoms hardly differed between the two groups.
A total of 61 people who were given Ginkgo were diagnosed with
Alzheimer's - the most common dementia disease - compared to 73 people
in the placebo group.
Alzheimer's Society spokeswoman Jess Smith said: "It is
understandable that people would want to hear that an over-the-counter
herbal remedy could be the answer to preventing Alzheimer's. "
Source - Independent