It doesn't lessen feelings and pain, it heightens them. Users say they hear things better, and they see details they have never seen before. Controls could also be placed on the quantity, potency,, amount, price, time and place of sale, and age of buyers. Interview with a marijuana user. None besides the effects regular cigarrette smoke does to your lungs.
Scientific facts prove there are none except the carcinogens produced by the smoke.
It doesn't cause brain damage like your teachers tell you. Quarter ounce a week, 15-18 joints a month. Better than average. It grows wild in some places. And cows wont eat it.