Does Marijuana Have Carcinogens in It?

Question by : Does marijuana have carcinogens in it?
I saw the following on National Institute on Drug Abuse on the National Health Institute nih.gov site:

Numerous studies have shown marijuana smoke to contain carcinogens and to be an irritant to the lungs. In fact, marijuana smoke contains 50 to 70 percent more carcinogenic hydrocarbons than tobacco smoke.

Is this true? Thanks.

Best answer:

Answer by Peter R
actually, it does. i think the carcinogens in it makes the smell

Answer by Josh
An extensive study published in 2006 by Donald Tashkin of the University of California, Los Angeles found that there is no significant link between smoking cannabis and lung cancer. The study, which involved a large population sample (1,200 people with lung, neck, or head cancer, and a matching group of 1,040 without cancer) found no correlation between marijuana smoking and increased lung cancer risk. The results indicated no correlation between long and short-term cannabis use and cancer, indicating a possible therapeutic effect. Extensive cellular studies and even some studies in animal models suggest that THC has antitumor properties, either by encouraging programmed cell death of genetically damaged cells that can become cancerous, or by restricting the development of the blood supply that feeds tumors, or both.

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