vape pens

It is well documented that cigarette smoke causes lung cancer, but giving up nicotine still proves to be the most challenging part of quitting cigarettes. 
While nicotine is the addictive substance in cigarettes, it is the long term exposure to inhaled smoke - and its toxic constituents - that adversely impact the lungs. 
The e-cigarette industry is now valued at about $1.7 billion, a number more t