Regularity of bedtime, wake-up time, and time in bed in mid-life: associations with cardiometabolic health markers with adjustment for physical activity and sedentary time

This study investigated the impact of sleep regularity (consistent bedtimes, wake-up times, and time in bed) on cardiometabolic health in middle-aged adults. It showed that irregular sleep patterns are linked to higher risks of obesity, blood pressure issues, and glucose regulation problems. Importantly, physical activity mitigated some negative effects of irregular sleep. The findings underscore the value of maintaining regular sleep patterns for metabolic health, which indirectly supports better brain function and long-term cognitive performance.

Maintain consistent bedtimes and wake-up times, aiming for at least 7 hours of sleep each night. Incorporate regular physical activity to buffer any negative impacts of sleep irregularity. The study provides robust evidence linking irregular sleep to poor health markers but notes that physical activity and lifestyle differences may influence individual outcomes.