Jetlag Affects Metabolism Less Than Sleep, Study Finds

**A study by the University of Surrey and the University of Aberdeen** delves into how body clock disruptions, such as those experienced during jetlag, impact metabolism compared to sleepiness and the brain's primary clock. Participants in the study underwent a controlled 5-hour delay in sleep and mealtimes, revealing temporary metabolic changes such as reduced energy processing, altered blood sugar and fat levels, and slower digestion. Interestingly, these metabolic changes recovered within 2-3 days, unlike the adjustments in sleepiness and alertness, which extended beyond 5 days. **Professor Jonathan Johnston** highlights the crucial role of consistent sleep schedules in safeguarding our metabolic health amidst modern challenges like long-haul travel and shift work. The insights into circadian rhythms underscore the need for informed lifestyle choices, suggesting that optimizing sleep and eating routines can boost overall wellbeing.