Nicotine's hold: What the gut and gender have to do with it

Many people who smoke or chew tobacco can't seem to escape nicotine's addictive properties. Studies show that women in particular seem to have a harder time quitting, even with assistance, when compared to men. Now, scientists ...

Health concerns swirl around electronic cigarettes

With sales of electronic cigarettes, or "e-cigarettes," on the rise and expected to hit $1.5 billion this year, concerns over potential health risks of using the trendy devices are also gaining momentum and political clout. ...

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