Sleep regularity is a stronger predictor of mortality risk than sleep duration: A prospective cohort study

This study analyzed data from over 60,000 individuals to compare the effects of sleep regularity and sleep duration on mortality risk. Using accelerometer data, the researchers calculated a sleep Regularity Index (SRI) and found that consistent sleep-wake patterns predicted a significantly lower risk of death from all causes, including cancer and cardiometabolic conditions. Importantly, sleep regularity was a stronger predictor of mortality than sleep duration. The findings highlight that maintaining a consistent sleep schedule may be critical for long-term health and longevity.

To enhance health and longevity, aim to maintain a consistent sleep and wake schedule, even on weekends. This recommendation is supported by robust data from a large population-based cohort. While the study doesn't establish causation, the statistical significance and broad applicability make this advice practical for most individuals.