In the twenty-first century , infectious diseases be not the main caseful of death like before. whatever(prenominal) more people murmur from other diseases which high proportion of these deaths back end be link to lifestyle, especially smoking.
Cig arette smoke contains over 4000 different chemicals. Many of these are harmful. The harmful piths in cigarette tobacco hold :
1) Tar - a mixture of substances, some of which can micturate cancer
Carbon monoxide - this gas is produced by incomplete oxidation of some substances in tobacco, that can reduces the oxygen carrying capacity of the blood
Nicotine - is the addictive substance in cigarette tobacco, it can affects the brain and other move of the nervous system. Nicotine is extremely addictive and this the main reason wherefore smokers find it difficult to give up. Nicotine molecules are small , they can easily move out of the blood and into ever get along of the body, including the brain. Nicotine can increases the level of a specific substances in the break up of brain.
Activation of these substances gives feelings of pleasure and this is why people enjoy smoking. Nicotine can also causes the release of adrenaline into the blood. Adrenaline increases the rate of core group beat, blood pressure and breathing rate.
Diseases causes by smoking
Lung diseases are a major cause of illness and death. They include:
Lung cancer : where cells in the lungs divide uncontrollably and form a tumor.
pulmonary emphysema : it prevents the normal flow of air through the gas exchange.
long-run Effects
As time goes by, the long-term effects of smoking travel even more clear.
Effects on the skin are apparent. A smoker develops stains on their teeth and fingers...If you want to get a full essay, order it on our website: Ordercustompaper.com
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