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CannaMD has reported on the question Does Smoking Marijuana Cause Lung Cancer? Key points of that reporting include: A large-scale study by Kaiser Permanente concluded that marijuana use was not associated with tobacco-related cancers or lung cancers

Experimental design figures were generated using images provided by Servier Medical Art under the Creative Commons Attribution 3.0 Unported License ( 3 Results 3.1 Acute smoke exposure triggers neutrophilic inflammation and occurrence of a unique alveolar macrophage subset in the lung To examine the effect of acute smoke exposure (4 days) on the pulmonary immune cell types and their molecular mechanisms, we performed scRNA-seq on cells collected by bronchoalveolar lavage from the alveolar space and from lung tissue of the same CS-exposed (n = 11) and air control (n = 7) animals ( Figure 2A )

The United Kingdom has adopted a notably pragmatic approach, actively promoting e-cigarettes as a smoking cessation aid

Although most data on benefits were of low certainty, the consistency in direction of effects across similar interventions provided greater overall certainty in the balance of benefits and harms