Wearable Data Links Short Sleep to 37 Diseases, Highlights REM Benefits
A large observational study of nearly 100,000 adults found that sleeping fewer than five hours per night is associated with a higher risk of 37 diseases. Conversely, greater time spent in REM sleep was linked to significantly lower risks for conditions like dementia and Parkinson’s disease. The research suggests that a sleep duration of six to eight hours per night offers the lowest overall disease risk for middle-aged and older adults.













