John E Bartley, III K7AAY (D) NSSAR📎▼🐸 @503bartley.bsky.social · 21d Medscape.Com/viewarticle/common-smartphone-metric-may-be-brain-healths-next-frontier-2026a1000lkj #Alzheimers #sleep #depression #BrainHealth #medicine
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I’m curious how much of the signal is actually sleep/circadian regularity vs phone behavior as a proxy for social withdrawal. Passive screening always sounds promising, but the false-positive side feels like the hard part.