If you experience menopause before age 45, doctors call this early menopause. While we can skip the occasional period, early menopause causes continued missed periods over the course of 12 months. It can occur due to unexplained factors but there are some known causes:
Genetics: If a close family member went through early menopause, then you could too. Autoimmune disorder: A condition like thyroid disease or rheumatoid arthritis can damage the tissues in the ovaries, affecting their ability to make hormones. Smoking: It can speed up the arrival of menopause. Cancer treatment: Chemotherapy or radiation to the pelvis for cancer can damage the cells in the ovaries. But not all women who have these treatments experience early menopause. Surgical menopause: This is when an operation is performed to remove both ovaries. Talk to your doctor before the surgery to help you better manage the symptoms. Low weight: A study of 80,000 women found being underweight made early menopause more likely. Women whose BMI was between 25 and 29 were up to 30 per cent less likely to experience early menopause.