After reading this information you may not think pot is so cool, safe or harmless. What ever your feelings are on marijuana, remember that it is still against the law. Marijuana is a green, brown, or gray mixture of dried, shredded leaves, stems, seeds, and flowers of the hemp plant.
Common names are pot, weed, grass or joint.
It's hard to know for sure whether regular marijuana use causes cancer. BUT it is known that marijuana contains some of the same, and sometimes even more, of the cancer-causing chemicals found in tobacco smoke. Studies show that someone who smokes five joints per week may be taking as many cancer-causing chemicals as someone who smokes a full pack of cigarettes every day. They tend to have more chest colds than nonusers. They are also at greater risk of getting lung infections like pneumonia.