Secondhand nicotine vaping at home and respiratory symptoms in young adults
Cohort study (n=2097; repeated annual surveys from 2014 to 2019, California) found prevalence of second-hand nicotine vape increased from 11.7% to 15.6% and was linked to increased risk of bronchitic symptoms (OR 1.40, 95% CI 1.06-1.84) and shortness of breath (1.53, 1.06-2.21).
Source:
Thorax
SPS commentary:
According to an editorial, in contrast to second-hand nicotine vaping (SHNV) exposure, there is significant evidence about the health risks associated with second-hand cigarette smoke, which has led to widespread campaigns banning cigarette smoking from public places. Unfortunately, this has not translated to SHNV exposure. It notes that studies have shown parents were more likely to have smoke-free than vape-free home policies, which supports the perception that SHNV exposure is less harmful. It suggests that because of this perception and the potential for harm, the current findings are of critical importance, and while association is not causation, this study is the first to describe the negative effects of SHNV exposure on respiratory symptoms. It calls for more work to be done to prove that this exposure directly causes harm.