News tagged with nicotine
Low dopamine levels during withdrawal promote relapse to smoking
Mark Twain said, "Giving up smoking is the easiest thing in the world. I know because I've done it thousands of times." Many smokers would agree that it's difficult to stay away from cigarettes. A new study in Biological Ps ...
Medicine & Health / Psychology & Psychiatry
Feb 08, 2012 |
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GLBT adults twice as likely to smoke, half as likely to have plans to quit
Gay, lesbian, bisexual and transgendered adults who smoke are not thinking about quitting or getting ready to quit, and a quarter are uncomfortable approaching their doctors for help, report University of Colorado Cancer ...
Feb 08, 2012 |
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Poorest smokers face toughest odds for kicking the habit
Quitting smoking is never easy. However, when you're poor and uneducated, kicking the habit for good is doubly hard, according to a new study by a tobacco dependence researcher at The City College of New York (CCNY).
Jan 20, 2012 |
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Comparing alcohol use and other disorders between the United States and South Korea
Hazardous alcohol use and depression are among the 10 leading causes of disability and premature death worldwide, according to the World Health Organization. Many low- to middle-income countries have begun to see a steady ...
Jan 16, 2012 |
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Study finds nicotine patches may help improve memory loss in older adults
Wearing a nicotine patch may help improve memory loss in older adults with mild cognitive impairment, according to a study published today in Neurology, the medical journal of the American Academy of Neurology.
Medicine & Health / Neuroscience
Jan 09, 2012 |
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Nicotine replacement therapies may not be effective in helping people quit smoking, study says
Nicotine replacement therapies (NRTs) designed to help people stop smoking, specifically nicotine patches and nicotine gum, do not appear to be effective in helping smokers quit long-term, even when combined with smoking ...
Jan 09, 2012 |
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Seeing others smoke encourages young people to smoke more
Young people who smoke each day light up more cigarettes if they see other young smokers. Anti-smoking campaigns wrongly ignore this implicit effect, says Dutch researcher Zeena Harakeh.
Jan 09, 2012 |
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New e-cigarettes affect users' airways
(Medical Xpress) -- E-cigarettes, or electronic cigarettes, are promoted as a safer alternative to smoking. However, a new study published in the journal Chest, shows that these e-cigarettes cause immediate change ...
Jan 06, 2012 |
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Smokers prefer cold turkey
(Medical Xpress) -- Cold turkey is the preferred method for giving up smoking according to public health researchers at the University of Sydney. With more than two-thirds of smokers giving up permanently this way, the research ...
Jan 03, 2012 |
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Chantix unsuitable for first-line smoking cessation use
The poor safety profile of the smoking-cessation drug varenicline (Chantix) makes it unsuitable for first-line use, according to a study published in the Nov. 2 edition of the journal PLoS One, an online publication of the ...
Medicine & Health / Medications
Nov 02, 2011 |
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Study examines nicotine as a gateway drug
A landmark study in mice identifies a biological mechanism that could help explain how tobacco products could act as gateway drugs, increasing a person's future likelihood of abusing cocaine and perhaps other drugs as well, ...
Nov 02, 2011 |
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Plant researchers locate transporter used for nicotine metabolism
The next time you take aspirin for a headache, thank a willow tree. Salicylic acid, a compound chemically similar to aspirin, is found in willow tree bark and is made by the plant as a chemical defense against pathogens. ...
Nov 01, 2011 |
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Influencing craving for cigarettes by stimulating the brain
Targeted brain stimulation increases cigarette cravings, a new study in Biological Psychiatry has found, which may ultimately lead to new treatments that reverse these effects. Cues associated with cigarette smoking, such a ...
Medicine & Health / Psychology & Psychiatry
Oct 31, 2011 |
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Program urges smokers switch to smokeless tobacco
(AP) -- In the smoker-heavy state of Kentucky, a cancer center is suggesting something that most health experts won't and the tobacco industry can't: If you really want to quit, switch to smoke-free tobacco.
Oct 28, 2011 |
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FDA: studies do not tie Chantix to mental problems
(AP) -- Federal health officials said Monday that Pfizer's anti-smoking drug Chantix did not increase psychiatric problems like depression and suicidal thoughts in two studies, though the findings are not definitive.
Medicine & Health / Medications
Oct 24, 2011 |
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Nicotine
Nicotine is an alkaloid found in the nightshade family of plants (Solanaceae) which constitutes approximately 0.6–3.0% of dry weight of tobacco, with biosynthesis taking place in the roots, and accumulating in the leaves. It functions as an antiherbivore chemical with particular specificity to insects; therefore nicotine was widely used as an insecticide in the past, and currently nicotine analogs such as imidacloprid continue to be widely used.
In low concentrations (an average cigarette yields about 1 mg of absorbed nicotine), the substance acts as a stimulant in mammals and is one of the main factors responsible for the dependence-forming properties of tobacco smoking. According to the American Heart Association, "Nicotine addiction has historically been one of the hardest addictions to break." The pharmacological and behavioral characteristics that determine tobacco addiction are similar to those that determine addiction to drugs such as heroin and cocaine. Nicotine content in cigarettes has actually slowly increased over the years, and one study found that there was an average increase of 1.6% per year between the years of 1998 and 2005. This was found for all major market categories of cigarettes.
For more information about Nicotine, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
