Continuing my stream of thought, it is my growing conviction that adiposity is largely heritable and therefore it is cruel to engender hopes in our clients that they can change their shape, to any significant degree, *long-term.*
It's a going joke that the notion that people are obese, due to lack of willpower, is a theory held predominantly by lean people.
But lean people might be more sympathetic, to the lot of obese people, were they to reflect on the fact that it is probably at least as hard for them to maintain appreciable weight-gain as it is for the obese person to maintain appreciable weight-loss.
Take me, for example. I'm currently about 6-0 145. My bodyweight has not varied more than 3-5 pounds, absent intervention, for years. Owing to pressures to get bigger and more muscular, I have experimented, over the years, with force-feeding.
I've found that I can increase bodyweight by 5-10 pounds, fairly easily, through force-feeding. Never mind, for the moment, that it all seems to go around my waist. Beyond those relatively few pounds, my appetite begins to shut down and I literally become sick of food.
On the other end, I can also lose 3-5 pounds, in relatively short order, by eating less and moving more. Much beyond that and, yep, I become ravenously hungry and literally think about food all the time.
Ironically, at that point, my body is behaving precisely like that of an obese person. The obese person exhibits the attributes of a starving person!