|Cognitive Benefits of Ginkgo Biloba
Ginkgo possesses cognitive benefits in postmenopausal women, suggests a placebo-controlled, double-blind study conducted by the
Psychopharmacology Research Unit in London.
In this study, postmenopausal women (aged 51-67 years) were randomly allocated to receive a standardized ginkgo extract 120mg or matching placebo for 6 weeks.
According to an established reproductive staging system, subjects were divided into those in the early (Stage +1; mean age 55 years) and late (Stage +2; mean age 61 years) stages of menopause.
At baseline and after 6 weeks of treatment, subjects completed tests of mental flexibility, planning, memory and sustained attention, and ratings of mood, sleepiness, bodily and menopausal symptoms.
The significant effects of ginkgo were in the test of mental flexibility, in which the subjects in Stage +2 who had poorer performance at baseline compared to those in Stage +1, required fewer trials to complete the task and made fewer errors after ginkgo treatment.
The beneficial effect of ginkgo is significant in the test of mental flexibility especially for postmenopausal women with poorer cognitive performance, the study concludes.