ive smoked for over 30 yrs now and have never had problems with memory unless i am streesed out about somthing or preoccupied with a good or bad thought that is stuck in my head..that whole weed messes up your memory thing has never actually been proven..nor has any of the other rumors about negative side effects from cannibis use ..the fed's know this and that is why they have steadily refused to allow legitimate researcher's to conduct any study's ..and is also why the DEA is being sued this year by researchers trying to prove once and for all that the govt is wrong on this issue and we are right...