While marijuana has some medicinal qualities, and can be used to treat different problems, the side effects of marijuana are daunting, it should be limited to use against only terminal diseases, in its natural state.
Marijuana affects perception, coordination, difficulty with thinking and problem solving, and learning and memory. Marijuana's adverse impact on learning and memory can last for days or weeks after the acute effects of the drug. Studies show an association between marijuana use and increased rates of anxiety, depression, and schizophrenia.
Marijuana increases heart rate by 20-100 percent, and can last up to 3 hours. Marijuana users have a 4.8-fold increase in the risk of heart attack. Studies show marijuana smoke contains 50-70 percent more carcinogens than tobacco smoke.