Vaping is most often used for Lungs & Breathing.

Vaping

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•Last Updated: August 28, 2025

Vaping involves inhaling vapor from a liquid using an electronic cigarette (also known as an e-cigarette). It is used as an alternative to smoking tobacco.

Last Updated:August 28, 2025

Research FeedRead all studies

Vaping during pregnancy may be no safer than smoking

In this meta-analysis of 9 observational studies in a total of 423,680 participants, inhaling nicotine during pregnancy was associated with pregnancy complications, regardless of whether it was by tobacco smoking, vaping, or both.

E-cigarettes aren’t harmless, and combining them with cigarettes makes them even worse

Inflammatory markers in the breath of tobacco and cannabis users versus nonusers

Vaping and the risk of chronic obstructive pulmonary disease

Are inflammation levels lower in vaping vs. smoking?

Vaping: Up-to-date evidence.