Vaping may lead to fewer respiratory infections for ex-smokers

The majority of smokers who successfully switch to vaping say they have fewer respiratory infections, according to a study. The researchers say that this is because smoking increases susceptibility to respiratory infections and stopping smoking can be expected to have a positive effect. In addition to this, vaping may also provide some antimicrobial protection through the e-liquid ingredient propylene glycol, though further evidence is needed to confirm this.