Thsalmon: Below are some excerpts from the first six of your "references" that purport to prove your point and they are hardly convincing. Each study is either irrelevant or inconclusive. Also, It seems that many of these studies don't discriminate between use and abuse of a recreational drug. My own comments are between curly brackets {}.
1) Further epidemiological studies are necessary to confirm the association of marijuana smoking with head and neck cancers and to examine marijuana smoking as a risk factor for lung cancer. {Inconclusive}
2) ...more studies are needed that focus on disentangling effects of marijuana from those of other drugs and adverse environmental conditions. {Inconclusive}
3) This has implications for marijuana as cancer risk factor. {Inconclusive: this is the strongest "conclusion" regarding health risk in this whole article.}
4) METHODS: Bronchoscopy was performed in 104 healthy volunteer subjects, including 28 nonsmokers and 76 smokers of one or more of the following substances: marijuana, tobacco, and/or cocaine. {Inconclusive since it's not specific}
5) In two different weakly immunogenic murine lung cancer models, intermittent administration of THC (5 mg/kg, four times/wk i.p. for 4 wk) led to accelerated growth of tumor implants compared with treatment with diluent alone. {Above quantity is ridiculous. 0.1mg/kg is required to get high. If you inject enough of just about anything into healthy cells, they will develop carcinoma.}
6) ...it remains to be confirmed that smoking cannabis alone leads to the development of chronic lung disease. {Inconclusive}
You're going to have to do better than cut and paste the impressive looking (to some, I suppose) results from a google search to convince anybody that there are studies proving the harm from cannabis use. I didn't assert anything, therefore I need not present references in support. I only called on you to provide references for your false assertion.
And, in reply to your bogus claim regarding cannabis as a "gateway" drug: I'm sure that one could prove caffeine is a gateway drug. No doubt over 99% of heroin users started with either Coca-cola, Dr. Pepper, or coffee. Therefore caffeine is an insiduous precursor to heroin addiction. What a ridiculous argument. Let me know if you can provide any references whatsoever that actually support your assertions, Thsalmon.
