Yes, I've heard good things about speed/meth and weight loss. Of course, as with everything, read the warnings & side effects. Some are good. Some aren't.
Those weight loss potato chips come to mind. "Anal leakage". How's that for putting lipstick on a pig? Much better sounding than "poop your drawers."
I tell my doctor that I don't want anything that "may cause memory loss". Including old age.
Besides alcohol. I've learned to live with those side effects. Kinda. Well, some of them.
All things in moderation cause excess will kill you.