Well, yes. That is why they give pot to AIDS and cancer patients. It helps with the "wasting away" syndrome in which they are not able to eat because their appetites are non-existant.
I don't think it should be illegal, though. It isn't any more damaging than smoking a cig. Maybe even less.
Alcohol should be illegal.
Yeah alcohol should be illegal. It's a great new idea that we haven't tried yet. Just because you're an idiot when you're drunk doesn't mean they should outlaw it for everyone else.