Plus, the cells lining the airways may produce excess mucus, making the breathing difficulties worse
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The group has raised concerns about new products that it says were illegally introduced without review by Richmond, Va.-based Altria Group Inc., parent company of Philip Morris USA, the nation's largest tobacco company, and No
Environmental Protection Agency (EPA), smoke from cigarettes alone contains more than 7,000 chemicals, including at least 250 that are known to be harmful, with more than 50 being carcinogenic
However, there are also many smokers who find the taste of real tobacco so difficult to replace that they continue to risk their lives by continuing to smoke