Poor sleep health is associated with older brain age: the role of systemic inflammation https://www.thelancet.com/journals/ebiom/article/PIIS2352-3964(25)00385-8/fulltext Poor sleep may accelerate brain agin https://medicalxpress.com/news/2025-09-poor-brain-aging.html The associations were more pronounced in males and appear to be partially mediated by systemic inflammation