Childhood obesity has been defined as a global epidemic and is affecting developing as well as developed countries. While some indications show a slowing in the rise in the prevalence of obesity in parts of northern Europe, in many countries obesity seems to be relentlessly on the rise. In this issue of Evidence-Based Child Health, Luttikhuis et al.(1) provide an up-to-date review of the interventions against childhood obesity. Luttikhuis et al. should be commended for their very well structured and analyzed data that shed a realistic light on the practical interventions on the one hand, and on the limitations of research in this complex field on the other. The authors conclude that:'A combined dietary, physical activity and behavioural component appears effective. Evidence from this review shows that family-based, lifestyle interventions with a behavioural program aimed at changing diet and physical activity thinking patterns provide significant and clinically meaningful decrease in overweight in both children and adolescents compared to standard care or self-help in the short-and the long-term'.The driving force of the epidemic of obesity in adults and children alike, is a 'toxic' environment which leads to maladaptive behavioural changes concerning the food we consume, the amount of physical activity we perform daily and the way we spend our free time. Therefore, it seems natural that behavioural changes of the whole household -and the child in particular -are a major way to tackle the problem as part of the so-called ecological model of obesity (2).The question that rises from this review is whether such behaviour-oriented interventions are available for the majority of obese children. The principles described by Epstein et al. (3)regarding the effectiveness of a 6-to 8-month family-oriented, multi-disciplinary, behaviour modification weight management program for obese children resulting in normal weight among ∼30% of participants following 10 years are as relevant today as they were when originally published in 1990. However, the availability of such organized group programs is very limited. Where available, these programs are usually funded at least partially by research funds, have limited coverage by health insurers and are not sustainable. As they are designed to be intensive and involve a large multidisciplinary group of caregivers, these programs are prohibitively expensive and thus not applicable to the lower socio-economic sectors where obesity is most prevalent. The primary care provider can attempt to implement the principles of such program into daily practice yet the lack of time, reimbursement and difficulties in motivating patients and their families to commit to such long-term interventions is a major barrier to success.Based on the conclusions of Luttikhuis et al. and on the concept of changing behaviours as a means of