Why have ginkgo leaf extracts been investigated for memory and Alzheimer disease?

Ginkgo leaf extracts have been investigated for their potential effects on memory and Alzheimer disease due to their purported ability to enhance mental functioning. This belief is often linked to the idea that the extract may increase blood circulation to the brain.12

While Ginkgo has a long history of use in traditional Chinese medicine for heart and lung health, its modern application for cognitive health remains a subject of scientific interest and study in the hope of identifying effective treatments or preventative measures for memory-related conditions.2