The study conducted by experts at Imperial College London said ginkgo biloba does not effectively tackle memory impairment. Experiments in 176 people with mild to moderate dementia for 6 months showed no difference between the group taking ginkgo and placebo. These results appear in the International Journal of Geriatric Psychiatry.
Researchers tested the consumption of 120 mg of ginkgo biloba daily in patients who were recruited from GP practices in London. They measured the respondents' cognitive abilities and quality of life for 2, 4, and 6 months. The test includes exercises to remember the words or answer questions about time or place.
There is no evidence that the standard dose of this herbal extract beneficial to memory. Quality of life as reported by patients or caregivers, also did not improve during the study.
Cochrane review showed that ginkgo may provide little effect on patient recall. According to study leader, Dr. Rob McCarney, lack of treatment in early senility make patients try many ways to inhibit disease progression.
Prof. Clive Ballard, director of research at the Alzheimer's association said, "Although it is very disappointing, these findings are important. Thousands of people with dementia may still buy ginkgo biloba with no hope of improvement. "
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