Poor Sleep and Metabolic Risk

The role of sleep in metabolic health is getting a lot of attention these days. In the current study, investigators examined the effect of experimental sleep curtailment on energy intake, energy expenditure, body weight, body composition, fat distribution, and circulating biomarkers.

They enrolled 12 healthy, nonobese people (aged 19 to 39 years; 75% men) in a randomized, controlled crossover study conducted in an inpatient setting. Half were assigned to sleep restriction comprising 4 hours in bed nightly and half to a control condition of 9 hours in bed. The study entailed 4 days of acclimation, in which participants were in bed for 9 hours, then 14 days of sleep restriction or control sleep, and then 3 days of recovery (9 hours in bed). Af…