YapSpan app iconYapSpanAll quizzes

Marker check · 3 questions

Sleep

Across 16 prospective cohorts, habitual short sleep carries ~12% higher all-cause mortality and very long sleep ~30% (largely as a marker of illness). Newer UK Biobank work suggests sleep REGULARITY predicts mortality even more strongly than duration. Untreated sleep apnea — loud snoring, gasping — multiplies cardiovascular risk.

The research

  • Cappuccio et al., Sleep 2010 — duration U-curve meta-analysis
  • Windred et al., Sleep 2024 — regularity outpredicts duration (UK Biobank)
  • Young et al., Sleep 2008 — untreated severe apnea, ~3× mortality