Smoking is bad for you, but now there's a new trend - vaping. Is it bad for you? A study by the American Physiological Society stated that nicotine-free solutions used in vaporizers include lung-harming substances, such as acrolein. Another study by the New England Journal of Medicine, found that e-cigs have alarmingly high levels of the carcinogen formaldehyde.

That said, it is safer, but less harmful doesn't mean safe. Watch the video below: