[cthalupa]

Do you think obese people have never tried just eating less? That doctors never tell them to do this and they never give it an attempt?

Yes, it is possible for every obese person on this planet to eat less and stop being fat. 100%.

But for some people, this is actually really difficult to do! And the more fat you put on, the more feedback loops there are in your body that push you towards eating more. Insulin and ghrelin response are big ones, but it wrecks your sex hormones, too - you're almost certain to see massive testosterone drops in men, which further stimulates your body to deposit more fat and build less muscle.

Being told to lose weight by diet and exercise is probably the most prescribed treatment on the planet, and one with one of the absolute lowest success rates.