The ginkgo biloba tree and its leaves have been studied extensively in the past several decades as one of the top super herbs for improving cognitive functions,
especially in those with aged-related
neurodegenerative diseases
. 
Referred to as yín xìng in Chinese medicine,
the leaves of the ginkgo tree have long been used by herbalists for
their effects as a brain tonic helpful for improving memory 
and the
ability to concentrate.
As a blood vessel dilator, it works directly
with the circulatory system to increase oxygen supply to the brain.
Learn more about specific constituents, 
like flavonoid glycosides and
terpene lactones,
and also how to harvest your own fresh ginkgo leaves.
