Sleep Shapes Longevity More Than Diet or Exercise

Sleeping fewer than seven hours a night shortens lifespan more than poor diet, lack of exercise, or weak social ties, making sleep one of the strongest predictors of long-term survival Short sleep accelerates aging by disrupting cellular repair, hormone balance, and energy production, even in people who eat well and stay physically active Most adults are not metabolically resilient enough to function on limited sleep, which means chronic sleep loss quietly compounds damage year after year Small, consistent sleep deficits add up over time, increasing vulnerability to disease and reducing your body's ability to recover from stress Restoring sleep quality by stabilizing light exposure, circadian timing, and nightly routines gives your body the conditions it needs to repair itself and extend health span