This system is very sensitive to the effects of tobacco poisons. Nicotine (the substance that creates a strong psychological dependence) nerve damage in two main ways: direct toxic effect on nerve cells and blood vessels spasm, which affects blood flow to the brain and is manifested by headache, dizziness, loss memory, reducing efficiency and more. With continued smoking may be affected and the senses: hearing diminishes and weakens eyesight, increasing the risk of cataracts.
Cardio - vascular system
About 25% of all diseases of the cardiovascular system are related to smoking. It shortens the life expectancy of smokers by about 10 years.
Each cigarette accelerated heart rate about 20 beats per minute. Smoking of 20 cigarettes a day is equivalent to physical activity obtained at 8:00 cycling against the wind. The heart of the smoker is "tired" and "aging" more quickly.
In addition, smoking in blood pressure increased by 20 to 40% due to the increase in heart activity and contraction of blood vessels.
Smoking accelerates the formation of atherosclerotic plaques in blood vessels, so that it is one of the most important risk factors for coronary heart disease and cerebrovascular disease. Characteristic of smokers is Buerger's disease, which develops in a painful narrowing of the arteries of the lower limbs, leading to a necrosis and amputation.
Among the most affected by tobacco systems in the body is breathing. Suctioned smoke irritates the airways and cause coughing and shortness of breath. But these are only external manifestations. In lungs with nicotine entering and many other poisons that cause: irritation and spasm of the bronchial smooth muscle, increased mucus secretion and their damage to the ciliary epithelium of the mucosa. Thus violate the bronchial patency and normal mechanisms for clearing the bronchial tree. Being developed acute and then chronic inflammatory diseases that deplete lung function.
Smokers greater incidence of asthma, lung cancer and even pulmonary tuberculosis due to reduced resistance to lung to infectious agents.
This system, through oral and masticatory apparatus is among the first to occur in tobacco smoke. Especially strong prejudice comes into immediate contact with the smoke mucosa of the lips, tongue, vocal cords, etc. Teeth turn yellow and break easily, so that smokers have unpleasant breath. They also suffer from chronic gastritis and peptic ulcer disease. Smoking is one of the reasons for the development of gastric cancer.
Nicotine and other toxins in tobacco smoke exert their harmful effects on the endocrine glands (endocrine glands). A well known secretions of these glands (hormones) are biologically active substances that play a crucial role in the functions of various organs and systems, and hence on the overall development of the organism. For example, under the influence of nicotine adrenal glands secrete large amounts of adrenaline in the blood, leading to a number of adverse changes in: blood pressure, increase in heart beat, increased blood sugar, extract calcium from bones, etc.
It is proven that smoking adversely affects sexual function. Changes occur in both the male and the female body. Male smokers often suffer from impotence and reduced fertility due to a change in the quality of semen. Women smokers are more common menstrual disorders (irregular menses and is more painful), infertility, premature birth and abortion. It is of importance and the earlier onset of menopause by 1 to 3 years, leading to premature aging.
Mothers who smoke usually have babies on average 250 grams underweight and often - with urodstva or chronic illness. When these children are more common syndrome and sudden infant death. If the mother continued to smoke after birth, it adversely affects their child through breast milk, which contains nicotine. This reduces the defenses of the newborn, so it is very likely to become "often ill child."
Smoking is one of the leading factors for the disease osteoporosis. On one hand, nicotine suppresses the function of osteoblasts - the cells that build bone tissue in the body and the other causes accelerated extraction of calcium from bones.
Smoking prematurely ages skin - it becomes a gray, lifeless granted. Appear around the lips of thousands of vertical wrinkles and smokers previously mined old form.
It is estimated that about 69 chemical compounds in the composition of tobacco smoke are carcinogenic. Cancers develop after a long, multi-smoking, especially in those bodies which are in constant contact with tobacco smoke: lung, bronchi, trachea, oral cavity, esophagus, stomach, duodenum. With tobacco smoking and cancer associated disorders: pancreas, kidneys, gallbladder, bladder, breast and others. Increased risk of cancer is determined by: genetic conditions, age of starting to smoke, duration of smoking, number of cigarettes smoked daily, nicotine and tar in the cigarettes used, depth of suction liners and more.
All the above damage to organs and systems in the human body are among the most common, though not the only effects of smoking on human health. Smokers not only destroy their own health. With smoke from cigarettes can damage the health of non-smoking people around them, the so-called "passive" smokers. Current cigarette filters retain the absorption of some toxic substances in the smoke, passive smokers but no filters. It is to explain the occurrence of headache, fatigue, reduced performance, increase in heart rate, watery eyes in many so-called "non-smoking passive smokers" living where smoking. Particularly suffer from passive smoking children. Their organism is highly sensitive to tobacco poisons. Children of smokers suffer about 3 times more frequently than children of non-smoking parents, especially lung infections, acute inflammatory diseases of the eyes, throat and respiratory system, asthma and others. They also found memory loss and thus reduction of success at school. Furthermore smoking parents encourage children to proceed to early this "craft".