Obese smokers gain pounds after quitting

Doctors say kicking the habit is still the best way to improve health, even if it comes with weight gain.

U.S. smoking rate falls to 15 percent

Higher tobacco taxes, tough messaging contribute to falloff.

Is your heart ‘older’ than you?

Smoking, high blood pressure and cholesterol age this vital organ. Find out more.

E-cigs amp up teen smoking rates

'It's certainly a cause of concern, because it's the first time we've seen that.'

Smokers more likely to quit as U.S. smoking rate drops

Efforts to discourage the unhealthy habit have made smoking less socially acceptable.

Teens clueless about marijuana and e-cigs effects

Studies indicate kids do understand dangers of cigarettes, but not these other products.

Graphic images on cigarette labels affect smokers’ brains

Emotional pictures are more memorable and reduce urge to smoke, researchers find.

Smokers may get less benefit from drugs for arthritic back pain

Study authors say inflammation or a lack of oxygen among possible reasons.

Cancer risk often left to chance

New study suggests two-thirds of cancers might be due to seemingly random factors.