You know what? I'm overweight (although not severely, I can take x-rays and the like without difficulty) and I rarely eat fast food. I should exercise more, but it doesn't matter what I do, I'm just not built to be skinny.
Conversely, my husband is very thin - he probably only weighs 120 pounds soaking wet - and he eats nothing but junk food. He's omni and a picky eater, so he only eats pizza, fried chicken, cheese, pasta with cheese, macaroni, and fast food burgers.
My eating habits are much healthier than his, and yet I'm the overweight one.
We see the world as "we" are, not as "it" is; because it is the "I" behind the "eye" that does the seeing.