Menopause is the end of a woman's menstrual cycle and fertility. It happens when:
Your ovaries no longer make estrogen and progesterone, two hormones needed for fertility.
Your periods have stopped for 1 year.
Menopause happens naturally with age. But it can also stem from surgery, treatment of a disease, or an illness. In these cases it’s called induced or surgical menopause, or premature ovarian failure.