News tagged with nicotine dependence

Related topics: smokers , smoking , nicotine , smoking cessation

What are electronic cigarettes?

As rates of smoking fall in Australia, electronic cigarette manufacturers are moving in. Liberty Flights last week released an (awful) online ad to "create awareness" of electronic or e-cigarettes in the Australian marketpla ...

Dec 12, 2013
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Why do young adults start smoking?

The risk of becoming a smoker among young adults who have never smoked is high: 14% will become smokers between the ages of 18 and 24, and three factors predict this behaviour.

Sep 17, 2013
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Smoking abstinence research receives major financial boost

Warren Bickel, an internationally recognized addiction expert at the Virginia Tech Carilion Research Institute, recently received a $3.2-million grant from the National Institute on Drug Abuse for research on improving self-control ...

Aug 05, 2013
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A nanotech fix for nicotine dependence

A chemical component present in the nightshade family of plants is one of the world's most tenaciously addictive substances. It is the nicotine contained in tobacco and found in high concentrations in cigarettes. ...

Jul 02, 2013
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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.

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