UCSF researchers built a machine-learning model from 7,000 sleeping brains and found that your brain's 'age' — estimated from sleep wave patterns — predicts dementia risk better than REM or deep sleep time. Every 10-year gap between your real age and your brain age raises dementia risk by 39%. The specific patterns that matter: delta waves, sleep spindles, and K-complexes — and wearable EEG headbands may soon let you track this at home.
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# TOGGLE START # Your Brain Has a Hidden Age — and Your Sleep Is Exposing It # UCSF Scanned 7,000 Sleeping Brains — the Results Are a Wake-Up Call # Every 10-Year Brain Age Gap Raises Your Dementia Risk by 39% # TOGGLE END
# [HOOK & INTRODUCTION — yellow_background]
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