The Risk of Cancer
Physical culture requires engaged in compliance with the regime, tempers their nature and, thus, is a reliable ally for those who decided to give up smoking. Smoking worse than athletes endure physical stress, more tired, more ill, they easily develop overvoltage. Everyone who smokes should remember that putting herself in great danger, because tobacco smoke – is primarily a poison heart sosudvstoy system, which carries the greatest load in physical education and limiting the physical capabilities of the organism. The combination of high load with a toxic effect of nicotine can lead to disaster, for example, the development of myocardial infarction.
We can not indicate here the pernicious effects of smoking on respiratory organs, which are the main entrance way to tobacco smoke.
When smoking irritated mucous membranes of the respiratory tract (larynx, trachea, bronchi, bronchioles and alveoli). The body tries to get rid of soot, tar and other products of tobacco smoke. This function takes, in particular, ciliated epithelium of the mucous membrane of the bronchi. His cilia perform various movements toward the exit from the respiratory tract, freeing them from infiltrators back foreign particles. However, under the influence of toxic substances of tobacco smoke, this process was inhibited, moreover, if a malicious stimulus continues to act for a long time, the cylindrical ciliated epithelium atrophy with time, increasingly being replaced by stratified squamous epithelium: a function of self-purification of bronchi significantly affected.
But on the mucous membrane of respiratory smoker settles to 90% of harmful substances emitted during the combustion of tobacco. When smoking formed a kind of concentrated liquid and solid products of combustion and sublimation of dry tobacco – tobacco tar. For the year through a light smoker an average of 800 grams of the substance.
Get rid of this quantity of tobacco tar airway is not under force. That is due to chronic bronchitis. The characteristic cough, painful especially in the morning, becoming a constant companion lovers tobacco potions. He is accompanied by coughing phlegm and facilitates the purification of the bronchi. However, the purification is incomplete. Soot and carcinogenic tar retained in the respiratory tract, causing irritation (note that patalogoanatomicheskom study light smoker differ darker than the lighter non-smoker).
Eventually joined by inflammatory processes, and in the bronchi begin to stagnate festering secret. Are formed pathological bronchiectasis – bronchiectasis. Bronchiectasis – severe lung pathology, often diagnosed in hardcore smokers. At 8-10 times more likely to suffer from pulmonary emphysema, and they – a disease which is characterized by decrease in elasticity of lung tissue and deterioration of the outflow of air from the lungs. With regard to lung cancer, then he’s lovers tobacco growing for a long time, gradually. First, there are precancerous changes, which under the influence of tobacco intoxication and other harmful influences that weaken the immune system, gradually degenerating into cancer.
Relationship between smoking and lung cancer are currently not in doubt. Evidence of this, have accumulated more than enough. It should be noted that the possibility of developing lung cancer under the influence of smoking has been demonstrated in experiments on animals (for example, after a two-year pilot smoking dogs appeared lung cancer).
According to American studies, mortality from lung cancer among smokers is 10 times higher, and among those who smoked two packs of cigarettes a day – 24 times higher than non-smokers. Similar observations were made and British scientists, who showed that smoking among persons aged 45 to 64 years, lung cancer develops in 7.8 times more frequently, and among persons 65-79 years – 11.5 times more likely than those who do not smoke.
Of particular concern to doctors cause those patients who are addicted to smoking from childhood. This is understandable, because the risk of lung cancer increases with smoking duration and number of cigarettes smoked per day.