A massive Nature study using 23 biological aging clocks found that both short and long sleep accelerate aging across the brain, heart, lungs, and immune system, with the optimal window varying by organ and sex.
A prospective study of 85,618 UK Biobank participants finds that people who naturally rebound after short sleep have lower mortality risk than those who do not — and that severe restriction without recovery raises death risk by up to 38%.
A Mass General Brigham study tracking 1,338 older adults for up to 19 years found that frequent napping, particularly in the morning, was associated with significantly higher mortality risk.
UC Berkeley researchers have mapped the brain circuits that control growth hormone release during sleep, revealing a feedback system that explains the links between poor sleep and metabolic disease — and opening new avenues for treatment.
A global study of Samsung Health users released for World Sleep Day found that 23% of participants showed signs of sleep apnea risk, with the condition silently robbing sufferers of deep sleep and REM sleep every night.
A new study from Oregon Health & Science University found that regularly getting less than seven hours of sleep is more strongly associated with shorter lifespan than poor diet, lack of exercise or social isolation.
The latest generation of sleep technology moves beyond wristbands to capture data you never knew you needed.