Doctors keep telling him he’s overeating, but that is not happening, not enough to have that kind of weight gain.
......
So he is overeating.
His metabolism either slowed or he is lying about his food addiction.
If he transitions to fasting except during one hour per day and goes very low carb / zero sugar / zero seed oils and no artificial sweeteners, he will lose weight fast, probably at least 50 lbs in 6 months. That will work and is a lot safer and I would say easier than cycling through more doctors and medications. If that sounds too difficult, well he has an extreme problem so it is probably the case that only extreme solutions will provide rapid enough and large enough results to feel good about the progress and keep going. And even though we are anonymous providers of free advice… what I have outlined will work and it is doable. And since 20 doctors have failed so far, why not follow Freeper fitness advice?