if you`re going to do meth for a few days and don`t eat in those few days you may lose some weight, but you`ll gain most of it back in the few days after coming down, and in the meantime you won`t look any better, you`ll look a tweaked out methhead. If you really want to lose weight, you`ll have such an enormous addiction by the time that you have reached your targetweight, that you`ll look like a wreck every day. If you quit the meth again, you`ll still look terrible for a while, and you`ll gain weight like crazy(I think you gained quite some weight after quitting meth, right -=ReD-hAzE=- ?).
I mean, it`s normal, because your body has been deprived of the things it needs, and it`s going to want to catch up. So after having done a lot of meth, you look worse than ever before, have lost a total of a few pounds, your money is gone and your health is terrible. Not to mention that you`ll probably feel like shit as well. So in my opinion, using meth to lose weight is not at all a smart thing to do, unless maybe you don`t really binge, eat enough to keep your body happy, exercise and try to stay healthy and not get addicted.
Personally I`d rather have someone that is a few pounds overweight, than someone that is thin and looks like they just crawled out of their grave.