https://www.naturalnews.com/2026-04-21-study-links-urban-walkability-to-larger-hippocampus.html
"Researchers found that residents of highly connected, walkable neighborhoods had larger hippocampal tails compared to those in less walkable areas. The hippocampal tail is a region within the brain's hippocampus that is critical for spatial memory and navigation. Its shrinkage has been strongly linked to the development of Alzheimer's disease, the most common form of dementia..."