Brain’s Immune System Replaces Itself at Midlife | Science News

Scientists reveal a major brain shift around age 50: the hippocampus’ immune cells swap out, bringing more inflammation — a key clue in why aging brains are vulnerable to dementia and Alzheimer’s. New tech lets us see this hidden transition across decades, linking immune changes, blood-brain barrier damage, and gene regulation — paving the way for smarter brain-aging treatments. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/b216b7d2d3e85f8d