A woman who has had her ovaries removed, either independently or as part of a total hysterectomy, experiences immediate menopause. Other types of abdominal surgery can interrupt the flow of blood to the ovaries, causing follicles to die.
2. Premature ovarian failure
Women who enter menopause in their thirties or even twenties may have illnesses that cause their ovaries to stop functioning well ahead of schedule. A thorough medical evaluation is appropriate.
3. Polycystic ovary syndrome (PCOS)
This medical condition interferes with ovulation, causing inflammation and scarring that damages and destroys follicles.
4. Autoimmune disorders
These include insulin-dependent diabetes, hypothyroidism, rheumatoid arthritis, and lupus.
5. Cancer treatments
Chemotherapy and radiation therapy often trigger early menopause. Women taking tamoxifen to reduce their risk of breast cancer may also enter menopause early.