Servick, Kelly. “How Does Exercise Keep Your Brain Young?” Science | AAAS. September 06, 2018. Accessed September 07, 2018. http://www.sciencemag.org/news/2018/09/how-does-exercise-keep-your-brain-young.

http://www.sciencemag.org/news/2018/09/how-does-exercise-keep-your-brain-young

From The Official Journal of the American Academy of Neurology:

Hörder, Helena, Lena Johansson, XinXin Guo, Gunnar Grimby, Silke Kern, Svante Östling, and Ingmar Skoog. “Midlife Cardiovascular Fitness and Dementia: A 44-year Longitudinal Population Study in Women.” Neurology, April 10, 2018. doi:10.1212/WNL.0000000000005290.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5894933/