Just How Safe Are Electronic Cigarettes?

We all know that smoking tobacco is harmful, so many smokers have switched to e-cigs. The question is just how safe are e-cigs? According to an article in Womans Health, they can junk up the air pretty well.

The major concern is nicotine, and not knowing for sure exactly how much is in an e-cig. In addition, they emit titanium (a toxic metal,) and four times more nickel than traditional cigarettes, Researchers say it's a good idea to stay away from secondhand vapors, especially if you have asthma, lung disease, cardiovascular disease, or if you are pregnant.