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That same combustion process that burns the tobacco and paper also produces a toxic cloud of carcinogens that directly harm lung tissue, says Narjust Florez, MD, a thoracic medical oncologist at Dana-Farber Cancer Institute, co-director at the Young Lung Cancer Program, and assistant professor of medicine at Harvard Medical School

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Some doctors may consider it on a case-by-case basis for nonsmokers at high risk for reasons such as a strong family history of lung cancer, certain genetic mutations, or environmental exposures but not for the general population.

Last month, the FDA granted competitor Njoy the first authorization for a menthol-flavored e-cigarette

Of this proportion, approximately 78% are male, and 22% are female