Deciding where to invest limited time and resources in obesity prevention is a difficult task but finite health resources make this a necessity. WHO has identified three distinct but equally valid and complementary levels of obesity prevention (Figure 1). The specific 'targeted' approach directed at very high-risk individuals with existing weight problems is represented by the core of the figure, the 'selective' approach directed at individuals and groups with above average risk is represented by the middle layer, and the broader universal or populationwide prevention approach is represented by the outer layer. This replaces the more traditional classification of disease prevention (primary, secondary, and tertiary), which can be confusing when applied to a complex multifactorial condition such as obesity.
Universal prevention is the domain of public health, whereas selective and targeted prevention
Figure 1 Levels of obesity prevention intervention. (Adapted from Gill TP (1997) Key issues in the prevention of obesity. British Medical Bulletin 53(2): 359-388.)
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I already know two things about you. You are an intelligent person who has a weighty problem. I know that you are intelligent because you are seeking help to solve your problem and that is always the second step to solving a problem. The first one is acknowledging that there is, in fact, a problem that needs to be solved.