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This is an accepted version of this page This is the latest accepted revision, reviewed on 7 January 2025. 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. For ...
The health effects of tobacco had been debated by users, medical experts, and governments alike since its introduction to European culture. [1] Hard evidence for the ill effects of smoking became apparent with the results of several long-term studies conducted in the early to middle twentieth century, such as the epidemiology studies of Richard Doll and pathology studies of Oscar Auerbach.
Tar is the name for the resinous, combusted particulate matter made by the burning of tobacco and other plant material in the act of smoking.Tar is toxic and damages the smoker's lungs over time through various biochemical and mechanical processes. [1]
We've made massive strides against the deadly disease, but rates haven't fallen for people diagnosed with the disease who've never smoked.
Like other unhealthy habits, quitting smoking at an older age cannot undo the harm that has accumulated over the years. ... the risk of developing lung cancer drops by half within 10 to 15 years ...
None of the three main causes of death from smoking—lung cancer, chronic obstructive pulmonary disease (COPD) (including emphysema and chronic bronchitis), and cardiovascular diseases—is caused primarily by nicotine; the main reason smoking is deadly is the toxic mix of chemicals in smoke produced by the combustion of tobacco. Products that ...
Lung cancer: Passive smoking is a risk factor for lung cancer. [19] [20] In the United States, secondhand smoke is estimated to cause more than 7,000 deaths from lung cancer a year among non-smokers. [21] A quarter of all cases occur in people who have never smoked. [22]
Upon smoking, carcinogenic chemicals are inhaled, affecting the inflammation response. As inflammation plays an important role in inducing cancer, with smoking affecting the inflammatory response of macrophages in the lungs, the dysregulated inflammatory response poses a higher risk in developing cancer along the airway.
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