Sleep EEG Predicts Higher Dementia Risk

A UCSF and Beth Israel Deaconess study published March 19 used machine-learning on sleep EEGs from roughly 7,000 adults aged 40–94, tracked 3.5–17 years, to estimate 'brain age' and predict dementia onset. Researchers report that each 10-year gap where brain age exceeds chronological age raised dementia risk by nearly 40%, identifying delta waves, spindles, and kurtosis as predictive features.
Scoring Rationale
Strong longitudinal data and institutional credibility, but findings require clinical validation and broader replication.
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