The number of adults currently using e-cigarettes in the UK is close to 2.9m, many of whom will have turned to the devices to quit smoking. While certainly they may help people kick the habit, there is a big problem with e-cigarettes: we don’t actually know for certain whether they are safe or not.
E-cigarettes were originally designed as an alternative to, and an aid for quitting, tobacco cigarettes. [...]
EU e-Privacy Directive