There is a general idea that tobacco is only dangerous because of its nicotine content. This view is incorrect. There is yet another evil inherent in tobacco and that is the phenols and tarry substances that are released in the process of smoking. The latter are, to a great extent, responsible for the development of cancer. Smoker’s cancer of the tongue or throat results directly from tar contamination rather than nicotine. Experiments with rabbits have shown that tobacco tar can cause malignant ulcers. The ears of some rabbits were brushed with tobacco tar every two or three days, and within a few weeks or months most of the animals developed cancerous ulcers. If these experiments are repeated using ordinary tar, the same form of cancer develops, thus proving that it is not the nicotine but the tar in tobacco which is responsible for cancer. Thus, it is wrong to draw the conclusion that low-nicotine or nicotine-free tobacco is safe to smoke.

*1166/28/1*

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