NOW, to my opinion. I think calling it a disease is functionally inaccurate. If you are fat (not including genetic disease/disabilities) you should get exercise. Because you are responsible for your body, and it's your fault it has come to this state. Calling it a disease only takes responsibility away from the "patient". And making them feel like it's not their fault their body fell into disarray.
having a disease doesn't absolve patients of responsibility. cancer patients physiologically have a disease. people with the flu have a disease. AIDS patients have a disease. it's just a fundamental right for patients to choose to treat their diseases or not to, nobody can really force someone to undergo treatments for a disease.
watch that TLC show "My 600lb story" or whatever it's called. plenty of the people on there go on about how they can't help it bla bla can't help this bla bla can't help that. anti-victim blaming is a psychological defense for obesity patients as they cope with the reality that they really have a disease and their body is in critical danger as a functioning organism (there are countless issues for a human body that stem from obesity as you likely already know). what's really another issue is that this psychological response always overshadows obesity patients who recognize the issue, face it head on, and go through the proper treatments/instructions to save their bodies and lose the excess weight.