Even if we accept that there is a component of genetics and other medical issues to someone's body weight, that accounts for no more than a few kgs, and even then they could be a healthy weight by eating a little less. The only truly legitimate excuses for someone to be morbidly obese is a child being given a neglectful diet by their parents, and someone mentally underdeveloped to the point that they can't properly gasp the concept of calories in & calories out. I don't understand why here (in the UK) there is such resistance to restricting NHS healthcare to the obese, when it is such an obvious and justified thing to do.