body mass index bmi

Physically active women are 25 percent less likely to get breast cancer, but certain groups are more likely to see these benefits than others, finds a review in the British Journal of Sports Medicine.

The type of activity undertaken, at what time in life and the woman's body mass index (BMI) will determine how protective the activity is against the disease.

New research shows teenage girls who smoke cigarettes are no more likely to lose weight than girls who don't smoke, dispelling a commonly-held belief.

In addition, boys who smoke cigarettes show a decrease in height as well as body mass index (BMI). These findings could have important public health implications, especially since many young girls cite weight control --- or the desire to be runway model thin --- as a reason for taking up smoking.