Sleep duration identified as key predictor of longevity

New research indicates that sleep duration may be a stronger predictor of longevity than diet or physical activity. Analyzing US health survey data from 2019 to 2025, scientists found that getting less than seven hours of sleep per night is significantly correlated with lower life expectancy.

According to researchers from Oregon Health & Science University, only smoking showed a stronger negative correlation with lifespan. While healthy eating and exercise remain vital for long-term health, sleep plays a critical role in cardiovascular function, immunity, and brain health. Experts recommend that adults aim for seven to nine hours of sleep per night.

In addition to sleep, other lifestyle habits can support metabolic and heart health. Research suggests that maintaining a 12-hour eating window and taking short walks after meals can help manage blood sugar levels and support overall longevity.