Regular Bedtimes Linked to Half the Heart Disease Risk, Study Finds
A Finnish study of 3,231 adults followed for 10 years found that irregular bedtimes doubled the risk of heart attacks, strokes, heart failure, or cardiovascular death, especially among those sleeping less than eight hours; wake times didn’t have the same effect. Experts say keeping a consistent bedtime supports the body's circadian clock, and recommend a fixed sleep window (ideally 7–8 hours) with a wind‑down routine. The American Heart Association now recognizes sleep regularity as a key heart-health factor, and treating sleep disorders is advised if sleep is persistently troubled.