Define Prevention in the prevalence of overweight or obesity?

It is believed that the increase in prevalence of obesity worldwide is more due to the environment that has become conducive to weight gain rather than genetic mutations within individuals. As pointed out earlier, Asian population is more susceptible to developing co-morbidities even at quite modest weight gains. You must have fully understood by now that obesity is a major risk factor for several chronic degenerative diseases. That is why it is all the more important to employ strategies that aim at creating environments facilitating behavioural changes in general populations regarding diet and physical activity to prevent this enormous public health problem.