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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 is an addictive substance found most commonly in tobacco and tobacco products including cigarettes, cigars, chewing tobacco, e-cigarette liquid, pipe tobacco, snus, snuff, and nicotine medications such as nicotine gum. Withdrawal is the body’s reaction to not having the nicotine it had become accustomed to.
In dependent smokers, withdrawal causes impairments in memory and attention, and smoking during withdrawal returns these cognitive abilities to pre-withdrawal levels. [104] The temporarily increased cognitive levels of smokers after inhaling smoke are offset by periods of cognitive decline during nicotine withdrawal. [35]
A National Institute on Drug Abuse video entitled Anyone Can Become Addicted to Drugs. [21]Nicotine dependence is defined as a neurobiological adaptation to repeated drug exposure that is manifested by highly controlled or compulsive use, the development of tolerance, experiencing withdrawal symptoms upon cessation including cravings, and an inability to quit despite harmful effects. [9]
A 2023 study that compared Zyn pouches to smokeless tobacco and nicotine replacement products found that while Zyn doesn’t contain “nitrosamines or some of those real known cancer-causing ...
The effects on sleep vary after being intoxicated, during withdrawal, and from long-term use. [26] Nicotine may result in arousal and wakefulness, mainly via incitement in the basal forebrain. [27] Nicotine withdrawal, after abstaining from nicotine use in non-smokers, was linked with longer overall length of sleep and REM rebound. [26]
Smoking exposes delicate cells inside the lungs directly to these compounds. This causes mutations in the DNA of the cells, which leads to cancer. According to the World Health Organization's report, "Tobacco Smoke and Involuntary Smoking", 80 percent of all cases of lung cancer are attributable to smoking. [6]
Nicotine increases heart rate and blood pressure and has a range of local irritant effects but does not cause cancer. [14] 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 ...