Ginkgo Doesnt Impact Cognitive Function in Healthy Elderly

EAST LANSING, Mich.Ginkgo supplementation appears safe, but does not benefit cognitive health in non-demented older adults (J Am Dietetic Assoc, 107, 3:422-32, 2007) (DOI:10.1016/j.jada.2006.12.011). Researchers from Michigan State Universitys College of Osteopathic Medicine conducted a four-month, randomized, double blind, placebo-controlled, parallel study including 90 men and women ages 65 to 84, who were free of dementia and depression and not taking compounds (drugs or supplements) that alter hemostasis. Participants received placebo or a supplement containing 160 mg Ginkgo biloba, 68 mg gotu kola and 180 mg docosahexaenoic acid (DHA).

A total of 78 subjects (n=36 placebo, n=42 ginkgo) completed testing at baseline and at four-months. At baseline, the participants cognitive function was above average. At studys end, there were no significant differences in quality of life, platelet function or cognitive function; one out of six cognitive tests suggested differences at four months favoring placebo. The researchers concluded the findings do not support the use of a ginkgo supplement for improving cognitive function in older, healthy adults; however, they note the high baseline cognitive scores may have contributed to the null findings. Further, the product was found to be safe, without impact on platelet function.