News tagged with nicotine

Related topics: smokers · smoking · smoking cessation · cigarettes · cigarette smoke

Study reveals new mechanism in nicotine addiction

Part of the reason people find smoking difficult to quit is that each time they have a cigarette, feelings of craving, irritability and anxiety melt away. This component of addiction is known as negative reward and is controlled ...

Dec 01, 2015
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Study explores nicotine patch to treat memory loss

Vanderbilt University Medical Center has received a $9.4 million grant from the National Institute on Aging (NIA) to test the effectiveness of a transdermal nicotine patch in improving memory loss in older adults with mild ...

Nov 05, 2015
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Raise smoking age to 21, US pediatricians urge

(HealthDay)—The minimum age to purchase tobacco products and e-cigarettes should be raised to 21 across the United States, according to a new policy recommendation released Monday by the American Academy of Pediatrics.

Oct 26, 2015
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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.

This text uses material from Wikipedia, licensed under CC BY-SA

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