Ginkgo Biloba is a living fossil. The tree has gone unchanged for as far back as 200 million years. Ginkgo has been cultivated in China for thousands of years for its nuts, the nuts where used as food as well as medicinally. The trees where rare and thought to be extinct to western science, but in the late 1700s the tree began to be cultivated more all around the world.
In the 1950s, western scientists began to research the potential healing benefits of ginkgo. Since then it has best earned a reputation as a way to keep your memory sharp. Laboratory studies suggest that Ginkgo improves circulation and blood flow to the brain by opening up the blood vessels.