Sleeping less than 6 h per 24 h increases significantly the risk of overweight and obesity.
Three sleep disorders may be found associated with weight gain: obstructive sleep apnea (OSA), insufficient sleep syndrome and narcolepsy.
Children and adolescents may be more vulnerable to the effects of insufficient sleep.
The link between sleep and weight is both hormonal and behavioral.
More research is needed on how sleeping more may help adults and children with overweight.