U.S. Cigarettes Pack Bigger Amounts of Cancer-Causing Chemical

Levels of tobacco-related nitrosamines — known carcinogens produced when curing tobacco — are higher in popular brands of American cigarettes compared with those from other countries, potentially leading to more cases of lung cancer, researchers found.

Levels of tobacco-related nitrosamines — known carcinogens produced when curing tobacco — are higher in popular brands of American cigarettes compared with those from other countries, potentially leading to more cases of lung cancer, researchers found.