Teen exercise can cut breast cancer risks

Research finds physical activity in teen girls alters breast cancer biomarkers

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Adolescent girls who actively partake in recreational physical activity can have significant protection against risks of breast cancer, according to a study.

Researchers from the Columbia University Mailman School of Public Health in the US showed that recreational physical activity may be associated with breast tissue composition and biomarkers of stress in adolescent girls. In the study, girls who reported engaging in at least two hours of recreational physical activity in the prior week, compared with none, had lower percent water content in breast tissue, an indicator of lower breast density and lower concentrations of urinary biomarkers linked to stress.