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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 ...
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.
Alcohol use disorder can cause a susceptibility to infection after major trauma to the lungs / respiratory system. It creates an increased risk of aspiration of gastric acid , microbes from the upper part of the throat, decreased mucus-facilitated clearance of bacterial pathogens from the upper airway and impaired pulmonary host defenses.
The cilia are hair-like, microtubular-based structures on the luminal surface of the epithelium. On each epithelial cell there are around 200 cilia that beat constantly at a rate of between 10 and 20 times per second. The cilia are surrounded by a periciliary liquid layer (PCL), a sol layer that is overlain with the gel layer of mucus. [9]
A heart attack is a potentially life-threatening medical emergency that can lead to cardiac arrest or death. Heart attacks are common, too, with an estimated 805,000 people in the United States ...
Combined with other heart disease risk factors, such as type 2 diabetes or high blood pressure, smoking increases the likelihood of developing heart disease even more. However, quitting can be ...
The hyperplasia of airway basal cells is the earliest indication of smoking-related abnormality in the lung. [4] [1] This is followed by shortened cilia, loss of ciliated cells, mucous cell hyperplasia, and loss of cell junctions giving a leaky epithelial barrier. With persistent stress from smoking, the basal cells become disarranged and lose ...
Many factors can affect this stage including infection and menstrual cycle hormones. Smoking (causing inflammation), and infection can reduce the numbers of cilia, and the ciliary beat can be affected by hormonal changes. [15] [68]