Irregular Bedtimes in Midlife Linked to Higher Risk of Heart Problems

Thu, 07 May 2026 03:19:00 +0200

A recent study by the University of Oulu in Finland highlights the significant impact of irregular sleep patterns on long-term heart health. Researchers tracked 3,231 individuals born in Northern Finland in 1966, analyzing their sleep habits at age 46 over a one-week period using activity monitors. The study focused on bedtime variability, wake-up times, and overall sleep duration, monitoring participants' health outcomes for over ten years. Findings revealed that participants with inconsistent bedtimes, particularly those sleeping less than eight hours per night, faced about twice the risk of major cardiovascular events, including heart attacks and strokes, compared to those with regular sleep schedules. Interestingly, the variability in wake-up times did not show a clear link to heart problems. Researchers suggest that maintaining a consistent bedtime may help regulate biological rhythms and support heart health over the long term. The study emphasizes that everyday routines, such as