Menopause is the time in a woman's life when her menstrual periods stop permanently. It is a natural part of aging, and marks the end of a woman's reproductive years. For most women, menopause occurs between the ages of 45 and 55. Menopause is caused by a decrease in the production of the hormones estrogen and progesterone. The symptoms of menopause vary from woman to woman. Common symptoms include hot flashes, night sweats, irregular periods, vaginal dryness, and mood swings. Other symptoms may include weight gain, insomnia, fatigue, headaches, and joint pain. Menopause can be treated with hormone therapy, which can help reduce the symptoms associated with it. Hormone therapy can also help reduce the risk of osteoporosis and other age-related conditions. Other treatments may include lifestyle changes such as exercise, stress management, and dietary changes. Menopause is a natural part of aging and cannot be prevented. However, it is important to talk to your doctor about your individual risk factors and symptoms so you can make an informed decision about treatment.