The more you smoke and the longer you smoke, the greater the risk of damage

The lifesaving drugs 'only work if they are taken,' CDC director says

The more you smoke and the longer you smoke, the greater the risk of damage

The lifesaving drugs 'only work if they are taken,' CDC director says

They were more affected by nicotine when they thought it was present in a cigarette, study showed

Decades-old documents show researchers were paid to influence scientific thinking, researchers say

Kids with lingering effects may need talk therapy, too, study suggests

She says she's feeling 'much better' after pneumonia diagnosis, but ignored her doctor's advice to rest

More than a third said it improved their drug-taking behavior

Study finds abnormality present in 10 percent of kids seems to undermine immune function