I've been smoking weed since 12 and I still have my memory, intelligence and alcohol does much more damage. Alcohol poisoning, cirrhosis, liver damage and not to mention you lose control of basically everything. No one's ever overdosed on weed, it helps with many ailments. It's not for everyone but neither is anything else. So in my personal experience it is harmless. But everyone reacts to weed differently and will have negative effects on people. So if you don't like marijuana or have bad experiences with it then don't smoke it
