Today
30–60 %
deep-sleep loss between ages 30 and 60
Pillar · Sleep10 min readUpdated May 2026
Sleepandlongevity
Consolidated, deep sleep is the substrate of cellular repair, hormonal regulation, and memory consolidation. Most credible longevity protocols start here.
Neuron, 2017 (Mander/Walker)
+15 %
stroke risk with chronic short sleep
60 %
more glymphatic clearance during sleep
↑ amyloid-β
after one night of sleep deprivation
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