Clean Label Project

Early puberty in girls can potentially increase the risk of breast cancer as adults.

Researchers tracked 180 females, monitoring height velocity (how quickly they grew), weight, breast development, menstrual cycles, and hormone levels. They found that women who hit puberty early had a higher concentration of an insulin-like growth factor (IGF-1). IGF-1 is a potent growth stimulant associated with breast density and breast cancer in adult women. Researchers also found a greate...