Trends Over Time in Tobacco-Specific Nitrosamines (TSNAs) in Whole Tobacco and Smoke Emissions From Cigarettes Sold in Canada

摘要

IntroductionTobacco-specific nitrosamines (TSNAs) are potent carcinogens. Levels of TSNAs can be modified through manufacturing practices. In the 2000s, TSNA levels in cigarettes sold in Canada were reduced by changes in tobacco curing processes. The current study examined TSNA levels over the following decade to examine trends over time.