Electronic cigarettes are also known as e-cigarettes.

Electronic cigarettes are battery-operated devices that deliver nicotine with flavorings and other chemicals to the lungs in vapor instead of smoke. 

E-cigarettes contain a cartridge of liquid containing nicotine, flavors and other chemicals. 

The device heats up the liquid without burning it, creating a vapor that is inhaled. 

They've recently gained in popularity due to their convenience & the variety of flavors available, but are they really safe? 

Some proponents say that because there is no combustion & no secondhand smoke, e-cigarettes produce fewer carcinogens than regular cigarettes. 

But critics say not enough research has been done on the effects of long-term use or potential health risks associated with these products. 

Recent study has found that electronic cigarettes contain harmful chemicals that can potentially damage the lungs. 

Another study has found a potential link between electronic cigarettes and cancer. 

Is vaping safe, then?  We don't yet know for sure. 

While e-cigarettes don't produce tar or carbon monoxide, two of the most harmful components of tobacco smoke.

They do contain other potentially harmful chemicals, including metals like nickel and lead.