[Obesity prevalence in Latin America].

Obesity is a public health problem that affects both the developed and the developing countries. Its aetiology includes genetic factors and lifestyle (diet and physical activity). The studies of its prevalence in different strata and localisations of the Latin American countries varied between 22-26% in Brazil, 21% in Mexico, 10% in Ecuador, 3-22% in Peru, 22-35% in Paraguay and 24-27% in Argentina, although these data should not be extrapolated to the general population. The comparative national studies made it possible to establish that: 1.- The prevalence of preobesity plus obesity was above 20% in 17 of the 20 countries. 2.- There is a trend to increase in the prevalence of obesity. 3.- The relation of obesity between women/men is significantly higher in females in the majority of countries. In any case, although the validity of these rates must be examined with care, since the goals of evaluation and comparison with the corresponding patterns might differ, it can be observed that the epidemiological transition in these countries leads to a growing number of persons with obesity.