I've talked about him a lot on this subverse, but I had a fat fuck friend who now weighs in at well over 600 lbs. At one point before he became completely unable to leave his house, the doctors put him on Desoxyn. He had no idea what it was. In any event, he dropped something like 100 lbs in just a few weeks (12, I think?) because he basically wasn't eating anymore. He asked the doctor to take him off of it because he lost so much weight he had skin flaps that were becoming infected. As soon as he was off the meth, he immediately started regaining the weight. Probably half a year and he was already blowing past the previous weight. You can take the weight off the fatty, but it won't change their mindset.