It's too early to tell
Curr Med Chem 2012;19:5895906
Slopen N, Kontos EZ, Ryff CD, et al
A recent Johns Hopkins University report in the journal Chemical Research in Toxicology noted e-cigarettes brands contain thousands of unknown chemicals and substances, often not disclosed by the manufacturers, and that the effects on the body of these chemicals remain to be seen.[10] One of the researchers said: I have a problem with how vaping is being marketed as more healthy than smoking cigarettes
The studies, however, have serious flaws
This operation, called collges, lyces et entreprises sans tabac (middle schools, high schools and companies without tobacco), is sponsored by the Association Lalla Salma de lutte contre le Cancer (Lalla Salma Association for the Fight against Cancer) and is starting in the major cities, Rabat, Casablanca and the Souss region, probably Agadir