Background The prevalence of obesity is increasing globally and will, if left unchecked, have
major implications for both population health and costs to health services. Objectives To
assess the effectiveness of strategies to change the behaviour of health professionals and
the organisation of care to promote weight reduction in overweight and obese people.

Background The prevalence of overweight and obesity is increasing globally, an increase
which has major implications for both population health and costs to health services. This is
an update of a Cochrane Review. Objectives To assess the effects of strategies to change
the behaviour of health professionals or the organisation of care compared to standard care,
to promote weight reduction in children and adults with overweight or obesity.