According to a new research, presented at the Obesity Week virtual meeting and simultaneously published in the journal Obesity, young individuals with earlier wake times and sleep midpoints appeared to have higher gains in fat mass over a one year period.

In a convenience sample of young people not seeking treatment, ages 8 to 17 years, wake time (P=0.03) and sleep midpoint (P=0.02) had an inverse correlation with 1-year fat mass. Earlier wake time and midpoint were tied to higher 1-year fat mass, noted Marian Tanofsky-Kraff, of the Uniformed Services University of the Health Sciences, Bethesda, Maryland. No other sleep aspects, such as weekend catch-up or social jet lag, had a significant association with 1-year fat mass (P>0.09)… (Medpage Today)