Poor sleep may nudge the brain toward dementia, researchers find

Staring at the ceiling while the clock blinks 3am doesn’t only sap energy for the next day. A large, long-running U.S. analysis of older adults has now linked chronic insomnia to changes inside the brain that set the stage for dementia.

Source: https://medicalxpress.com/news/2025-11-poor-nudge-brain-dementia.html