Steven used to think smokeless tobacco was relatively safe, but now he knows more. "Not until I started looking at the facts, my friend would show his mouth and he'd have blisters all inside of it ...

In the study, the researchers examined data from nearly 9,500 teenagers, including about 6,000 girls and 3,500 boys, who participated in an ongoing study of 9- to 14-year-olds that began in 1996 ...

In the study, the researchers examined data from nearly 9,500 teenagers, including about 6,000 girls and 3,500 boys, who participated in an ongoing study of 9- to 14-year-olds that began in 1996 ...