The Effects of Smoking Cigarettes?
The health effects of smoking cigarettes are horribly destructive and in many cases, deadly. Approximately 7000 chemicals, have been identified in cigarettes and cigarette smoke to date, 250 of which are poisonous and 70, carcinogenic. Science is far from finished in its exploration of the composition of manufactured tobacco products, and the chemical count is still increasing.
The ingredients in cigarettes affect everything from the internal functioning of organs to the efficiency of the body's immune system. The health effects of cigarette smoking are destructive and widespread. Let's take a closer look at the details about how smoking affects the human body.
Toxic Ingredients in Cigarette Smoke
The chemicals in cigarette smoke are inhaled into the lungs and from there travel throughout the body, causing damage in numerous ways. Nicotine reaches the brain in 7 to 10 seconds after smoke is inhaled. Nicotine has been found in every part of a smoker's body, including breast milk. Carbon monoxide, which is present in cigarette smoke, binds to hemoglobin in red blood cells, preventing these cells from carrying all of the oxygen they normally would. This can lead to symptoms of carbon monoxide poisoning. Cancer-causing agents (carcinogens) in tobacco smoke damage important genes that control the growth of cells, causing them to grow abnormally or to reproduce too rapidly. Seventy such cancer-causing chemicals have been identified in cigarette smoke to date.
Smoking affects how the immune system functions by causing oxidative stress. This in turn causes DNA mutation, setting the stage for cancer and heart disease. Oxidative stress is also thought to be a contributor to the aging process. Antioxidants are nature's way of combating the damage oxidative stress causes to the body's cells. Smokers have less antioxidants in their blood than nonsmokers. Smoking is associated with higher levels of chronic inflammation, another damaging process that may result in oxidative stress.
Cigarette smoke contains radioactive heavy metals that "stick" to the tar that collects in the lungs of smokers. Over time, this builds up and is believed to be one of the risk factors for lung cancer in smokers.
Read more about the hazardous chemicals present in tobacco smoke.
ที่มา http://quitsmoking.about.com/od/tobaccostatistics/a/CigaretteSmoke.htm
The Effects of Smoking Cigarettes? The health effects of smoking cigarettes are horribly destructive and in many cases, deadly. Approximately 7000 chemicals, have been identified in cigarettes and cigarette smoke to date, 250 of which are poisonous and 70, carcinogenic. Science is far from finished in its exploration of the composition of manufactured tobacco products, and the chemical count is still increasing.The ingredients in cigarettes affect everything from the internal functioning of organs to the efficiency of the body's immune system. The health effects of cigarette smoking are destructive and widespread. Let's take a closer look at the details about how smoking affects the human body.Toxic Ingredients in Cigarette Smoke The chemicals in cigarette smoke are inhaled into the lungs and from there travel throughout the body, causing damage in numerous ways. Nicotine reaches the brain in 7 to 10 seconds after smoke is inhaled. Nicotine has been found in every part of a smoker's body, including breast milk. Carbon monoxide, which is present in cigarette smoke, binds to hemoglobin in red blood cells, preventing these cells from carrying all of the oxygen they normally would. This can lead to symptoms of carbon monoxide poisoning. Cancer-causing agents (carcinogens) in tobacco smoke damage important genes that control the growth of cells, causing them to grow abnormally or to reproduce too rapidly. Seventy such cancer-causing chemicals have been identified in cigarette smoke to date. Smoking affects how the immune system functions by causing oxidative stress. This in turn causes DNA mutation, setting the stage for cancer and heart disease. Oxidative stress is also thought to be a contributor to the aging process. Antioxidants are nature's way of combating the damage oxidative stress causes to the body's cells. Smokers have less antioxidants in their blood than nonsmokers. Smoking is associated with higher levels of chronic inflammation, another damaging process that may result in oxidative stress.Cigarette smoke contains radioactive heavy metals that "stick" to the tar that collects in the lungs of smokers. Over time, this builds up and is believed to be one of the risk factors for lung cancer in smokers.Read more about the hazardous chemicals present in tobacco smoke.ที่มา http://quitsmoking.about.com/od/tobaccostatistics/a/CigaretteSmoke.htm
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