Imagine a future where the beneficial effects of exercise could be recreated in a brain ravaged by the cell loss, plaques, and tangles associated with Alzheimer’s disease. To this end, it would be crucial to first determine the biochemical
changes that could improve memory in a brain experiencing the early stages of dementia. A giant step forward uncovered how exercise and neurogenesis work collaboratively to enhance the likelihood that new neurons will survive to play a role in protecting against cognitive decline. 

Rudy Tanzi, Ph.D., and Se Hoon Choi, Ph.D., Massachusetts General Hospital