Study finds failure to sustain reductions in carcinogens in cigarettes

Via Top Health News -- ScienceDaily

Tobacco-specific nitrosamines (TSNAs) are potent carcinogens formed predominantly during the cigarette manufacturing process. Despite initial success lowering TSNA levels in cigarettes sold in Canada, following subsidies by the Ontario government to manufacturers in 2000, a study has found that the decrease in TSNAs have not been sustained.

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