
Late-Night Owls Face Elevated Heart Risk, Large UK Study Finds
A UK Biobank analysis of over 300,000 middle-aged and older adults found night owls have a 16% higher risk of a first heart attack or stroke over about 14 years and poorer cardiovascular health, largely due to unhealthy behaviors and a mismatch between internal clocks and daytime schedules. The researchers emphasize regular sleep-wake times and other heart-healthy habits to mitigate risk.











