What an insanely misleading headline. E-Cigs have no cancer-causing ingredients whatsoever. PG, VG, nic, and food flavorings; none of these are cancer-causing.
Yes, they can produce some potentially cancer causing components in the aerosol if they run too hot. But the amounts are fairly low compared to
tobacco smoke unless/until one applies way more power than a given coil should have, or the coil runs dry. Either of these conditions is unpleasant enough that the user is likely to stop and fix the problem. Unfortunately, so called "researchers" (with few exceptions like Dr. F.) never bother to have experience vapers evaluating the aerosols they use for testing to see if they're even remotely tolerable. E.g. a recent paper just published in the last few days used a regulated sub-ohm setup at 100 watts and only pulled 70ml pufs from it four seconds, which is absurdly little airflow for such a setup and is pretty much guaranteed to overheat the
coils.
