Sleep and obesity

There is an emerging literature on the relationship between sleep and obesity in children and adolescents. Most studies have focused on the duration of sleep, with shorter duration associated with increased risk of obesity. In this volume of The Journal, Jansen et al evaluated both duration of sleep and the variability of duration measured by actigraphy in children from Mexico City. They created 4 sleep categories: sufficient stable, sufficient variable, insufficient stable, and insufficient variable.

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