Growth hormone plays key role in early puberty, breast cancer risk

(Cincinnati Children's Hospital Medical Center) Girls who enter puberty early in life--as measured by early breast development and age of first menstrual period--have a longer window of susceptibility to breast cancer. This window stays propped open for too long because their bodies have higher concentrations of growth hormone and they experience a slower progression ('tempo') during puberty.
Source: EurekAlert! - Cancer - Category: Cancer & Oncology Source Type: news