Cigarette Additives in E-Cigarettes may Harm Efforts to Stub Out the Habit

Pyrazine additives in low tar "light" and e-cigarettes may be reinforcing the addictive qualities of nicotine and should be strictly regulated, reveals a new study.

The evidence suggests that pyrazines have sensory and pharmacological effects which act independently of, and in tandem with, nicotine, and were developed by the tobacco industry to make low tar (light) cigarettes taste richer and smoother, and boost sales.

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In total, more than 2.5 million Canadians have tried e-cigarettes, with smokers and young people making up the largest demographic of ongoing users.

Nicotine dependence is a complex process, but is primarily caused by the ability of nicotine to prompt the release in the brain of dopamine, a chemical involved in pleasure, arousal, and mood change. But a growing body of evidence suggests that nicotine alone is not responsible for the intense addictive properties of tobacco smoking and the high relapse rate among people attempting to stub out their habit for good using nicotine replacement products.

The researchers scoured internal tobacco industry documents made available in the late 1990s as a result of litigation and reviewed scientific research on the composition and role of cigarette additives. The tobacco industry developed low tar cigarettes following increasing concerns about the deleterious impact on health of smoking, and a continuing decline in cigarette sales since World War II.

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With e-cigarettes enjoying a surge in new users, the move is a bid to prevent the re-normalization of smoking, Health Minister Mark Drakeford said.

But these low tar versions lacked the taste, aroma, and flavor of regular cigarettes. The sensory inputs of pyrazine flavor additives might also provide cues for reward-related learned behaviors and could play a critical role in the development, maintenance, and relapse of tobacco dependence, wrote the researchers, suggesting that they could increase the attractiveness of smoking, particularly among youth.

The study is published online in the journal Tobacco Control.

Source: ANI

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