A recent study conducted by researchers at Oregon Health & Science University (OHSU) has highlighted the significant relationship between sleep duration and life expectancy. Published in the journal SLEEP Advances, the research indicates that consistently getting insufficient sleep may contribute to a shorter lifespan, a finding that underscores the importance of prioritizing sleep.
To arrive at their conclusions, the research team analyzed a comprehensive national database, correlating survey data on lifestyle factors with life expectancy across various U.S. counties. This analysis, which utilized data from the Centers for Disease Control and Prevention (CDC) spanning from 2019 to 2025, revealed that sleep duration was a stronger predictor of life expectancy than factors such as diet, physical activity, or social isolation. Smoking emerged as the only lifestyle factor with a more significant impact on longevity.
Senior author Dr. Andrew McHill expressed surprise at the strength of the correlation, noting that while the health benefits of sleep have been acknowledged, the findings emphasized the critical need for individuals to aim for seven to nine hours of sleep per night. The study represents a pioneering effort to track yearly state-by-state trends in sleep and life expectancy, highlighting a consistent relationship across nearly all states and years analyzed.
While the study did not delve into the biological mechanisms linking sleep to longevity, McHill pointed out that adequate sleep is essential for heart health, immune function, and cognitive performance. The research suggests that sleep should be prioritized alongside diet and exercise for overall health and longevity. The study received funding from the National Heart, Lung, and Blood Institute and other institutional supports.