Childhood sleep time and long-term risk for obesity: a 32-year prospective birth cohort study.

Objective: Associations between short sleep duration and increased BMI have been found in children and adults. However, it is not known whether short sleep time during childhood has long-term consequences. We assessed the association between sleep time in childhood and adult BMI in a birth cohort.

Does childhood television viewing lead to attention problems in adolescence? Results from a prospective longitudinal study.

Context: There is controversy over whether childhood television viewing causes attention problems. The findings from cross-sectional and longitudinal studies have been mixed. To our knowledge, no longitudinal studies have assessed the impact of children's television viewing on attention problems in adolescence.