Which of the following is related to an increase in the chance of breast cancer?
A) early menopause
B) pregnancy
C) early first menstruation
D) breast-feeding

Question

Quizplus · Accepted Answer

Early onset of menstruation is a known risk factor for breast cancer because it exposes the breast tissue to a longer lifetime of hormones, including estrogen, which can promote the growth of breast cancer cells. The other choices are actually protective factors: early menopause lowers exposure to hormones, pregnancy and breast-feeding lead to decreased estrogen exposure.

Which of the Following Is Related to an Increase in the Chance