@ciurrb:
Well, while I think you are wrong there—though I can't cite facts and numbers here, honestly—I feel you're missing the broad point I was making. I may have used it as an example, but my statement was not intended to hinge so entirely upon those for whom normal weight is a
literal impossibility.
"Could never obtain normal" and "would have to devote a large amount of time and effort to obtain normal" are two very different things.
Many people have to, or would have to, go through
quite a lot of effort to stay within a "normal" range, and this tends to be underappreciated by people who have only a small amount of difficulty, because of their differing physiology —this exhibits itself most plainly when people say things like, "well, I was overweight once but I managed to get back down with a bit of self-restraint," or, "staying under a certain weight is simply a matter of [X]".
Particularly, in light of these differences, there's an issue of
massively insidious victim-blaming, inherent in saying, "you did this to yourself," which quite frankly, is the ultimate implication of saying any health issue is from a "lifestyle choice".
(As an aside, for stuff like complications of smoking and alcohol problems, the victim-blaming is, at least, usually technically fair and accurate, whether or not it's helpful. Here, I'm saying, it really isn't.)
"You
chose this". As if for everyone it were equally a choice (some have neither the time nor the money, and you need at least one of those two to live healthily), as if someone could choose whether or not to eat, indeed as if, in the extreme, a good number of people didn't get faint from lack of food when they simply eat "little enough" to stay "normal-weight", as if controlling weight were
just about willpower and anyone overweight has "let themselves go", and as if the "choices" involved for different people were even
roughly equivalent.
It's one of the cruelest and most ignorant things things we routinely say, in a dozen different ways, to overweight people. (Of course, we don't criticize underweight people nearly on the same scale—they just get concern—because, frankly, as a group, we aren't
really concerned about people's health, just whether they're fat or not).