University of Massachusetts Medical School

File photo of a person lighting a cigarette. (Photo by ERIC FEFERBERG/AFP/GettyImages)

Study: Large Increase In Cigarette Nicotine Levels

Cigarettes now contain more nicotine, and are more addictive than researchers had previously believed.

01/19/2014

Follow

Get every new post delivered to your Inbox.

Join 2,159 other followers