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While all smokeless tobacco products are harmful, these findings reveal that consumers of some brands are unknowingly exposed to extremely high levels of addictive and cancer-causing chemicals, said SPH Professor Irina Stepanov

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Smoking-driven restructuring of gastrointestinal microbial communities Beyond the respiratory tract, cigarette smoke exerts profound systemic effects that extend to the gastrointestinal ecosystemthe largest and most metabolically active microbial reservoir in the human body

The global burden of lung cancer: current status and future trends