Marijuana has more than 400 different chemicals, many of which are dangerous. It is a dangerous, addictive drug that acts like both a stimulant and a depressant. It makes the heart beat faster, lowers body temperature, increases hunger, slows down the ability to react, and interferes with the proper working of muscles. Marijuana is very harmful, poisoning the structures that trigger cells to grow and replace themselves. Marijuana smokers also seem more likely to get sick than are people who stay away from the drug, so it seems that the drug weakens the body's ability to fight germs. Users have personality problems that include loss of mental energy, lack of interest in everyday things, loss of concentration, and difficulty in recalling events and actions.
This is mostly all bullshit