My father died in his very late 70's, his best friend died in his mid 80's, they started smoking pot when they were in their late teens or early twentys just after WWII. Both lived very happy & healthy full lives. He had other friends that smoked & lived live long & hard but I didn't know them that well. I never saw it as harmfull & smoked throughout my teens but quit probably before I reached 20. So much for baised research.

Barry