Diet, physical activity and behavioural interventions for the treatment of overweight or obese adolescents aged 12 to 17 years.

Adolescent overweight and obesity has increased globally, and can be associated with short- and long-term health consequences. Modifying known dietary and behavioural risk factors through behaviour changing interventions (BCI) may help to reduce childhood overweight and obesity. This is an update of a review published in 2009.