The Efficacy of Ginkgo biloba on Cognitive Function in Alzheimer Disease

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Abstract
GINKGO BILOBA is a living fossil tree having undergone little evolutionary change over almost 200 million years. While currently it is essentially extinct in the wild, it is widely cultivated for its nut as well as for its leaves. The tree has a high tolerance to urban and industrial pollution and is extremely resistant to insects, bacteria, viruses, and fungi. Extracts of the leaves have been used for 5000 years in traditional Chinese medicine for various purposes. Medicinal extracts are made from dried leaves. Studies on the biological activity of different components of the ginkgo leaf began with modern scientific methods about 20 years ago.