I don't think being morbidly obese (the typical label we get in the US) is healthier. But it is not always synonymous with illness. When I lost weight I got really sick and had to have my gallbladder surgically removed as my body was out of balance creating gallstones. My body having always been fat, didn't know how to handle my eating healthier. I did have a better lifestyle and was happier. Apparently the endorphins released during exercise are a pretty good antidepressant