Associations of meal timing and sleep duration with incidence of obesity: a prospective cohort study

This cohort study explored the relationship between meal timing, sleep duration, and obesity risk among Korean adults. Midnight snacking and high energy intake from late-night snacks were associated with a significantly increased risk of obesity. Conversely, sleeping for 8 or more hours per night was linked to a reduced obesity risk, especially among women. The findings highlight how circadian rhythms and lifestyle behaviors, such as meal timing and sleep habits, impact metabolic health. The study underscores the importance of aligning eating and sleeping patterns with the body’s natural rhythms to reduce obesity risk.

To lower obesity risk, avoid late-night snacking and consuming meals close to bedtime. Aim for a regular sleep duration of 7-8 hours nightly, especially for women, as this may enhance metabolic health. These recommendations align with the study's findings but should be tailored to individual schedules and health conditions. Combining meal and sleep adjustments with a healthy diet and exercise could further improve outcomes.