Seven Hours of Sleep Minimizes Heart Disease Risk
Adults need 7 hours of sleep per night to minimize the risk of cardiovascular disease, as deviations increase CVD incidence by up to 25%.
- 7 hours per night associated with lowest CVD risk in large cohorts
- ≤6 hours increases cardiovascular disease risk by 20-25%
| Metric | Scientific Observation | Impact Magnitude | Source | ||
|---|---|---|---|---|---|
| 7 hours/night | Lowest CVD incidence after adjustments | Reference (lowest risk) | Zhang et al. (2023), BMC Medicine | ||
| ≤6 hours/night | Increased CVD risk in cohort of >60,000 | 20-25% higher | Zhang et al. (2023), BMC Medicine | ||
| >9 hours/night | Elevated CVD risk across demographics | Significantly higher | Zhang et al. (2023), BMC Medicine |