Tobacco and diseases

Tobacco and diseases - Tobacco and its dangers Tobacco...

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Tobacco and its dangers
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Tobacco smoke Tobacco smoke contains about 1000 chemicals, many of them being harmful Smoking kills 12 times the number of people killed in road accidents It contains nicotine which is addictive Tar is a black sticky substance that forms in the moist lungs Tar contains 17 chemicals ( carcinogens ) that are known to cause cancer Carbon monoxide is a poisonous gas that stops red blood cells from carrying oxygen around the body
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Heart disease Heart disease is 3 times more common among smokers Smokers have more chance of a heart attack (when the heart stops working)
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Healthy, clean lungs A healthy lung looks like a pink sponge The air sacs give the lungs a large surface area for gas exchange to take place This ensures that enough oxygen gets into the blood and around the body
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Lung cancer Cancers of the lungs, mouth, gullet (oesophagus), and the bladder are caused by chemicals called carcinogens in tobacco smoke 9 out of 10 people who die from lung cancer are smokers
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This note was uploaded on 11/23/2011 for the course BIO 100 taught by Professor Robinson during the Fall '08 term at BYU.

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Tobacco and diseases - Tobacco and its dangers Tobacco...

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