We have tried, as a human being, to simplify a complex problem as obesity is, just stigmatizing patients and blaming them for lack of willpower to eat less. However, obesity, actually is considered a multifactorial chronic disease with a strong genetic component and it is socially transmittable. Acting upon a genetic background are a number of hormonal, metabolic, psychological, cultural and behavioral factors that promote fat accumulation and weight gain.
For many years besides physical exercise an lifestyle changes we didn't have too many drugs to treat this pandemic. Bariatric surgery appeared in the 70s and 80s as a solution for very severe cases. In the 90s was proved that is not a matter of aesthetic surgery bariatric surgery can actually save lives decreasing comorbidities and increasing life expectancy