Will chronic e cigarette use cause lung disease? Thoracic and Sleep Group Queensland While vaping is not risk free, it is less harmful than tobacco Our World in Data Top E cigarette Brands in the World 2019 Top E cigarette Companies Electronic Cigarette Market Report Technavio Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health.