Ginkgo Biloba Extract has been repeatedly evaluated for its ability to reduce anxiety, stress and other symptoms associated with Alzheimer’s disease and cognitive decline associated with aging.

Overall, research results are inconsistent in this area.

Some studies show a marked reduction in the rate of cognitive decline in people with dementia using ginkgo, but others fail to replicate this result.

A review of 21 studies revealed that when used in conjunction with conventional medicine, ginkgo extract may increase functional capabilities in those with mild Alzheimer’s

Another review evaluated four studies and found a significant reduction in a spectrum of symptoms associated with dementia when ginkgo was used for 22–24 weeks

These positive results could be related to the role that ginkgo may play in improving blood flow to the brain, especially as it relates to vascular types of dementia.

Overall, it’s too soon to definitively state or refute ginkgo’s role in treating dementia, but recent research is beginning to make this piece clearer.