Research

Hormonal

Short sleep duration (≤5-6 hours per night) is associated with a significantly increased risk of coronary heart disease (RR 1.48) and stroke (RR 1.15) compared to the reference group of 7-8 hours.

Aim for 7-8 hours of sleep per night. Consistently sleeping 5 hours or less per night is associated with a significantly higher risk of heart disease and stroke. While you cannot change your genetics, prioritizing sleep duration is a modifiable risk factor for cardiovascular health.

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Short duration of sleep was associated with a greater risk of developing or dying of CHD (RR 1.48, 95% CI 1.22–1.80, P < 0.0001), stroke (1.15, 1.00–1.31, P = 0.047)...
Francesco P. Cappuccio et al. · European Heart Journal · 2011

Why this rating

Large-scale meta-analysis of prospective studies with high statistical power and no publication bias, though observational design limits causal inference.

Source

Sleep duration predicts cardiovascular outcomes: a systematic review and meta-analysis of prospective studies

Francesco P. Cappuccio et al. · European Heart Journal · 2011

DOI 10.1093/eurheartj/ehr007

Meta-analysis · 15 studiesCited 2,139×
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DOI resolved against Crossref · corpus check 2026-06-10

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