http://www.ncbi.nlm.nih.gov/pubmed/23467656
RESULTS :
We found that the e-cigarette vapours contained some toxic substances. The levels of the toxicants were 9-450 times lower than in cigarette smoke and were, in many cases, comparable with trace amounts found in the reference product.
Moins dangereux aurait été moins racoleur et plus juste.
les études sur les expositions aux faibles doses étant peu nombreuses.