The JAMA Neurology study found that sleeping six hours or less per night was associated with increased amyloid-beta, a protein that can form brain plaque associated with Alzheimer's disease.
Notes on verification
Directly confirmed by the peer-reviewed JAMA Neurology study (Winer et al., 2021) and corroborated by multiple independent secondary sources including medical news outlets and academic summaries. [tier=gold indep_score=0.9 clusters=4 claim_tier=notable | framework convergence=single on A4 study dataset and the single JAMA Neurology publication by Winer et al. (2021) (upstreams: Winer JR, Deters KD, Kennedy G, et al. JAMA Neurology 2021;78(10):1187-1196, Anti-Amyloid Treatment in Asymptomatic Alzheimer's Disease (A4) study cohort) — publishers independent, evidence may not be | kind=attributed eligibility=high]
Sources
- How much sleep keeps cognitive decline at bay? - Harvard Health (seed:psychology_and_neuroscience)
- https://pmc.ncbi.nlm.nih.gov/articles/PMC8406215 (corroboration)
- https://www.alzheimer-europe.org/news/new-research-jama-neurology-explores-impact-sleep-duration-amyloid-accumulation-and-cognitive?language_content_entity=en (corroboration)
- https://www.healio.com/news/neurology/20210908/short-long-sleep-duration-worsen-older-adults-amyloid-beta-burden-cognition (corroboration)
- https://www.foxnews.com/health/alzheimers-risk-sleep-study.amp (corroboration)