E-cigarettes may inflame lungs as much as cigarettes do | Science News

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E-cigarettes may inflame lungs as much as cigarettes do

Indicator of lung inflammation changes as much after ‘vaping’ as after smoking

4:25pm, June 16, 2014

Using electronic cigarettes has the same short-term effects on the lungs as smoking conventional tobacco cigarettes, a study finds. Both products triggered sharp reductions in exhaled nitric oxide among 25 volunteers. Toxicologists view drops in the gas as a marker of inflammation that signals airway damage.

After ‘vaping,’ or inhaling e-cigarettes’ vapors, volunteers exhaled 2.2 to 3.2 parts per billion less nitric oxide than when exhaling normally. The bigger drop came after volunteers vaped a nicotine-free fluid. Smoking regular cigarettes dropped nitric oxide values by 2.8 parts per billion. An earlier study found a similar trend but couldn’t rule out nicotine as the culprit in the larger drop.

The research team also used machines to smoke or vape the three products and then measured the resulting aerosol particles. E-cigarette vapors contained about 65

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