“‘The goal is to protect people’s health and avoid possible adverse effects,’ Health Minister Ana Mato said in a statement. Spain already bans minors from using e-cigarettes, and the regions of Catalonia and Andalusia have recently announced similar bans on their use in public places. Governments around the world have struggled with how to regulate e-cigarettes since their emergence and growing popularity in recent years. Supporters claim they are a less dangerous alternative to regular cigarettes and a valuable tool in helping smokers to quit. However, the World Health Organisation has advised against them, saying their potential health risk ‘remains undetermined’.”
http://www.thelocal.es/20131219/spain-bans-e-cigarettes-in-public-spaces