Search results
Results from the WOW.Com Content Network
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 ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 7 January 2025. There is 1 pending revision awaiting review. 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 ...
Nicotine is a secondary metabolite produced in a variety of plants in the family Solanaceae, most notably in tobacco Nicotiana tabacum, where it can be found at high concentrations of 0.5 to 7.5%. [180] Nicotine is also found in the leaves of other tobacco species, such as Nicotiana rustica (in amounts of 2–14%).
Nicotine may be safer than nicotine plus the other chemicals found in cigarettes and vapes, but on its own, nicotine has been associated with detrimental health effects as well, says Bhatnagar.
The report's conclusions were almost entirely focused on the negative health effects of cigarette smoking. It found: cigarette smokers had a seventy percent increase in age-corrected mortality rate; cigarette smoke was the primary cause of chronic bronchitis; a correlation between smoking, emphysema, and heart disease. In addition, it reported:
Smoking cessation, usually called quitting smoking or stopping smoking, is the process of discontinuing tobacco smoking. [1] Tobacco smoke contains nicotine, which is addictive and can cause dependence. [2] [3] As a result, nicotine withdrawal often makes the process of quitting difficult.
Nicotine itself could be at least partly responsible for many of the adverse after birth health results related to cigarette use while the mother was pregnant. [40] There is evidence that nicotine negatively affects fetal brain development and pregnancy outcomes. [42] There is also risk of stillbirth and pre-term birth. [43]
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.