Summary Brain aging is not uniform. A novel machine learning method reveals seven distinct patterns of neurodegeneration, each associated with different diseases and clinical outcomes. Transcript INTRO Hey, so here's a question I think about a lot: why do some people's brains age so much faster than others? I mean, we all get older, obviously, but the way our brains change with age—the atrophy, the cognitive decline—that's wildly variable. Two people at seventy can have completely different neurological trajectories. And that's been bugging researchers for years, right? Because if we could figure out the actual patterns of brain aging, we could potentially predict who's at risk for what, and maybe […]