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Marijuana and Cancer

   Consider these facts before you decide to smoke pot.

   There are more cancer-causing agents in marijuana than in any other substance presently known to man.  Crude marijuana contains more carcinogens (one hundred fifty more) and in greater concentration than tobacco.

   One joint deposits four times as much cancer-causing tars in the smoker's airways as does tobacco smoke. Smoking three to five joints a week is equal in harmful effects to smoking 16 cigarettes daily.  Smoking one joint a day is equal to a pack of cigarettes daily. Three joints smoked per week for three to six months carries the same probability of developing lung cancer as smoking a pack of cigarettes daily for 20 to 30 years.

   Because the pot smoker tends to breathe in the smoke more deeply and hold it longer than the tobacco user, greater harm is done to the lungs. Five times as much carbon monoxide (associated with coronary diseases) is inhaled in marijuana smoke as in tobacco smoke.

   Prolonged exposure to marijuana smoke can cause emphysema-like symptoms, cancer of the lungs, mouth, and tongue, and leukemia in children born from marijuana-smoking mothers.

   Cases of cancer reported in users in their 20's and 30's include cancer of the mouth, jaw, tongue, larynx, head, neck, and lungs. Normally these cancers would occur between the ages of 55 and 60.

   The American Cancer Society, the Food and Drug Administration, and the American Medical Association have all stated that marijuana has not been shown to be safe or effective as a medicine. Smoked marijuana has not been shown to be superior to other available therapies for the treatment of nausea and vomiting associated with cancer chemotherapy.

   Still think marijuana is a harmless drug?

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