Sleep duration identified as key predictor of human life expectancy

Recent research highlights the critical role of sleep in determining human longevity. A study from Oregon Health & Science University suggests that sleeping fewer than seven hours per night may be a more significant predictor of life expectancy than diet or physical activity.

Insufficient sleep is linked to chronic conditions such as obesity, diabetes, and cardiovascular disease. While most people face health risks from sleep deprivation, researchers at the University of California, San Francisco, are studying ‘natural short sleepers’—individuals with rare genetic mutations who remain well-rested on only four to six hours of sleep.

Additionally, nutritional factors play a role in sleep quality. Research published in JAHA indicates that diets high in fiber may be associated with deeper, less fragmented sleep, which in turn supports cardiovascular health. Experts recommend aiming for seven to nine hours of sleep per night to optimize long-term health outcomes.