You have seen a supermodel who is obese on the cover of Cosmos. That was Tess Holliday. She is morbidly obese, and a role model to others with severe obesity. She is a leader in the body positivity movement that claims we all can be beautiful, and healthy, at any size. To be brutal, she might be. There is a small percentage of overweight and obese people who are metabolically normal, for the moment.