Chronic Obstructive Pulmonary Disease, or COPD, is a limitation of how much air a person can inhale and exhale. Smoking has long been considered a major risk factor, but some smokers avoid the problem ...

A new study looks at how those, who vape and use hookahs, inhale and exhale. It's an examination of duration, volume, and velocity. In other words, constructing product-specific puff topographies. The ...

E-cigarette vapers and hookah smokers are more than twice as likely to exhale particles through their nose compared with cigarette smokers, who favor exhaling the emissions from their mouth, a new ...