When It Comes To Cigarette Addiction, Nicotine Isn?t Acting Alone
 

When It Comes To Cigarette Addiction, Nicotine Isn?t Acting Alone
http://img.s-msn.com/tenant/amp/enti...6&q=60&o=f&l=fPyrazine additives may be reinforcing the addictive qualities of nicotine, say researchers who recommend strict regulation of this particular cigarette (and e-cig) additive.