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Tuesday, December 9, 2014

Smoking chemicals- Nicotine- lung cancer - smoking problems

Smoking

Smoke, too, are millions of tiny particles, called particulate matter. It is this matter which, upon condensation, forms of own mass called tar.

Tar contains nicotine and more than a dozen known to trigger cancer when applied to the skin or breathing of laboratory animals. The chemicals are called carcinogenic of their cancer-producing activity. In studies in which one of the chemicals benzpyrene, has been diluted 1,000 times and placed in partition of pellets implanted in the cheek pouches of hamsters, 90 percent of the animals have developed mouth cancer within 25 weeks. 

Nicotine, a colorless oily compound, occurs in cigarettes in a range of 1 to 2 milligrams. In concentrated form, nicotine is a potent poison and 10 milligrams, which form about one drop, will if injected kill an average human. Among the other chemicals in cigarette smoke are phenols, which interfere with the action of the cilia, the hair like projections which line the respiratory tract and have a protective action.


Other chemicals are Irritants contributing to cigarette cough, and some are believed to be involved in the gradual deterioration of the lungs in emphysema. The person just beginning to smoke experiences symptoms of mild nicotine poisoning, such as rapid pulse, faintness, dizziness, nausea, and clammy skin. Sometimes even long-experienced smokers develop one or more of the symptoms. 

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