The journal Inhalation Toxicology published a new study in this month’s issue. The objective was to assess potential indoor air quality and health impacts relating to the use of e-cigarettes. The results: “secondhand” vapor is shown to be far less dangerous than secondhand smoke.
According to the study: “Four different high nicotine e-liquids were vaporized in two sets of experiments by generic two piece e-cigarettes to collect emissions and asses indoor air concentrations of common tobacco smoke by-products. Tobacco cigarette smoke tests were conducted for comparison. Comparisons of pollutant concentrations were made between e-cigarette vapor and tobacco smoke samples. Pollutants included VOCs, carbonyls, PAHs, nicotine, TSNAs, and glycols.”
From these results, risk anaylses were conducted. Non-cancer risk anaylsis revealed “No Significant Risk” of harm to human health for vapor samples from e-liquids. In contrast, for tobacco smoke most findings markedly exceeded risk limits indicating a condition of “Significant Risk” of harm to human health.
With regard to cancer risk analysis, no vapor sample from e-liquids (A-D) exceeded the risk limit for either children or adults. The tobacco smoke sample approached the risk limits for adult exposure.
The chief results of the study showed that:
1) Very few of the chemicals present in secondhand smoke were detected in the electronic cigarette vapor.
2) Of the few chemicals that were detected, the levels were substantially lower than those present in secondhand smoke.
In conclusion, the study indicates no apparent risk to human health from e-cigarette emissions based on the compounds analyzed.
Dr. Murray Laugesen of Health New Zealand is quoted as stating: “The results of this study confirm the findings of my last four year of research. E-cigarettes pose no discernible risk to public health.”