Most women naturally go into menopause when they’re in their 40s or 50s. That’s because as a woman ages, she has fewer reproductive eggs and her estrogen and progesterone levels decline. After 12 months of not having a menstrual cycle, she’s considered to be in menopause.

But for women undergoing breast cancer treatment, menopause can start earlier and feel more extreme.

“Breast cancer treatment can speed up the process...