Studies have shown that smoking is bad. Tobacco smoke contains more than 30 toxic substances, among which there are nicotine, carbon dioxide, carbon monoxide, hydrogen cyanide, ammonia, tar substances, and other organic acids.
1-2 packs of cigarettes contain a lethal dose of nicotine. A smoker does not die because this dose is not injected into the body immediately, but fractionally. Statistical data shows: compared with non-smokers, long time smokers 13 times more likely to develop angina pectoris, 12 times – myocardial infarction, and 10 times – stomach ulcer. Smokers are 96-100 % of all lung cancer patients. Every seventh long time smoker is ill with obliterating endarteritis, which is a serious illness of blood vessels.
Tobacco products are prepared from the dried leaves of tobacco, which contain proteins, carbohydrates, minerals, fiber, enzymes, and other fatty acids.
Among them, it is important to note two groups of substances that are dangerous to the human health: nicotine and isoprenoids. Nicotine takes the first place in terms of the quantitative content in tobacco. It enters the body via smoke, which are composed of, besides nicotine, irritants, including carcinogens (benzopyrene and dibenzpyrene, i.e., carbohydrates contributing to the development of malignant tumors.)
Nicotine is a nerve poison. Animal testing and human patients observation established that nicotine in small doses excites nerve cells contributes to increased rates of respiration and heart rate, disturbs heart rhythm, cause nausea and vomiting. In large doses, it brakes and then paralyzes the cells of the central and vegetative nervous systems. The disorder of the nervous system declares itself in reduced ability to work, hand tremor, and the weakening of memory.
Very often, smoking leads to the development of chronic bronchitis, accompanied by a persistent cough and bad breath. As a result of chronic inflammation, the bronchial tubes dilate, bronchiectasis are formed causing severe consequences: pneumosclerosis and pulmonary emphysema, with so-called pulmonary heart, leading to heart failure. This determines the appearance of a heavy smoker: a hoarse voice, puffy face, shortness of breath. Smoking also is one the causes of tuberculosis. Thus, 95 out of 100 people suffering from it, were smoking at the time of onset of the disease.
Most smokers are experiencing pain in the heart. This is due to spasm of the coronary arteries that supply the heart muscle with the development of angina (coronary heart failure).
Myocardial infarction occurs in smokers three times more often than in non-smokers. Smoking can be a major cause of persistent spasm of the lower extremities, contributing to the development of obliterative endarteriita primarily affecting men. This disease leads to malnutrition, gangrene, and eventually to lower limb amputations.
Those who write free sample research papers on smoking is bad topics should mention as well that the substances contained in tobacco smoke damage digestive tract, especially the teeth and oral mucosa. Nicotine increases the secretion of gastric juice, which causes aching pain in the stomach, nausea, and vomiting.
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