I feel for those people. It would be incredibly hard to battle that.
What I would include in this discussion is people who slowly stop taking care of their bodies until it is almost too far to save. I get that eating healthy and exercising isn't easy. I get that we won't be perfect but to not attempt, to not prioritize is a mistake and we need to see it as that.
I am at a point in my life where I will not do things if it prevents me from exercising. I treat exercise the same way I treat sleep. It is a must do each day and I prioritize it as such.