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This is an accepted version of this page This is the latest accepted revision, reviewed on 31 December 2024. Circumstances, mechanisms, and factors of tobacco consumption on human health "Health effects of smoking" and "Dangers of smoking" redirect here. For cannabis, see Effects of cannabis. For smoking crack cocaine, see Crack cocaine § Health issues. "Smoking and health" redirects here ...
One of the most well known diseases caused by smoking is lung cancer. A few carcinogens commonly found in tar include benzene, acrylamide and acrylonitrile. Smoking exposes delicate cells inside the lungs directly to these compounds. This causes mutations in the DNA of the cells, which leads to cancer.
Using chewing tobacco increases the risk of fatal coronary heart disease and stroke. [25] [26] In 2010 more than 200 000 people died from coronary heart disease due to smokeless tobacco use. [27] Use of chewing tobacco also seems to greatly raise the risk of non-fatal ischaemic heart disease among users in Asia, although not in Europe. [25]
Smoking cessation is one the most effective methods for managing numerous smoke-related diseases and other immune diseases such as AIDs. [ 25 ] [ 26 ] It brings both short term and long term benefits as the mucus clearance is improved in 48 hours and the mortality risk of lung cancer is halved in 10 years. [ 25 ]
Tobacco smoke, besides being an irritant and significant indoor air pollutant, is known to cause lung cancer, heart disease, chronic obstructive pulmonary disease (COPD), emphysema, and other serious diseases in smokers (and in non-smokers as well). The actual mechanisms by which smoking can cause so many diseases remain largely unknown.
The consumption of tobacco products and its harmful effects affect both smokers and non-smokers, [9] and is a major risk factor for six of the eight leading causes of deaths in the world, including respiratory diseases, cardiovascular diseases, cerebrovascular diseases, periodontal diseases, teeth decay and loss, over 20 different types or subtypes of cancers, strokes, several debilitating ...
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The harms caused by inhaling tobacco smoke include diseases of the heart and lungs, with smoking being a major risk factor for heart attacks, strokes, chronic obstructive pulmonary disease (emphysema), and cancer (particularly cancers of the lungs, larynx, mouth, and pancreas). Cancer is caused by inhaling carcinogenic substances in tobacco smoke.