...cigarettes? I am thinking about asking my doctor for a legalized marijuana holder card because I have a chronic illness which causes pain, I want to test out cannabis for it. (I am in Washington State, it's legal here) I have read many things on marijuana and it's effects and frankly, I don't see what the problem is. But I am curious, since you're still smoking something, can it give you lung cancer? Or anything like that? Does smoking in general cause lung cancer or deficiencies or is that only in cigarettes?