Adherence
Sleep duration of approximately 7 hours per day is associated with the lowest risk of all-cause mortality and cardiovascular events, while both shorter and longer durations increase risk in a U-shaped dose-response relationship.
Aim for approximately 7 hours of sleep per night to minimize your risk of heart disease and early death. Both sleeping significantly less than 7 hours and significantly more than 7 hours is linked to higher health risks. This applies to generally healthy adults; if you have underlying conditions, consult your doctor.
U-shaped associations were indicated between sleep duration and risk of all outcomes, with the lowest risk observed for ~7-hour sleep duration per day... Both short and long sleep duration was associated with an increased risk of all-cause mortality and cardiovascular events.
Why this rating
Large-scale meta-analysis of prospective cohort studies with consistent findings across multiple outcomes, though observational design limits causal inference.
Source
Relationship of Sleep Duration With All‐Cause Mortality and Cardiovascular Events: A Systematic Review and Dose‐Response Meta‐Analysis of Prospective Cohort Studies
Jiawei Yin et al. · Journal of the American Heart Association · 2017
DOI 10.1161/jaha.117.005947
Related findings · Adherence
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This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →