I have bee smoking MJ since I was 18-19ish. I smoke once or twice a day 4 or 5 days a week. I was wanting to know, how does it affect me? I have ADD and I have read somewhere that it can be good for people with ADHD/ADD. If so than how does it help? Is it a bad idea to smoke marijuana if I am going to college? do you think it might effect my grades? I find that if I smoke one hit and not get too stoned than I am much more motivated to get things done. I can clean my room and do dishes and I will be doing nothing but cleaning while I crank up my music. Most of the time I am not motivated to do much of anything at all. I also notice that when I am writing big papers I can think of the words much easier. I come up with big detailed words to describe something that I normally don't come up with if I am sober. Reason why I posted here is because I want to know some facts about marijuana and not propaganda. I have read something about how marijuana can be used to improve brain cell growth but I cannot find any information to back that statement up.