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From a regional perspective, we can see many countries in Europe and Asia have higher rates of tobacco use

A teenager in Canada who routinely used e-cigarettes developed a unique, near-fatal lung condition that does mirror the vaping-related illnesses sweeping the United States

Cannabis may aggravate existing respiratory illnesses, such as asthma and cystic fibrosis

Combustion, fine particles, soot, trace metals, and the wrapper around them all matter more than what is written on the box, said co-author P S Ganesh Subramanian, who is currently a postdoctoral researcher at Washington University in St Louis

Despite the follow-up calls, few callers might relapse and some are lost to follow-up