abnormal uterine bleeding
"At age 56, after testing to rule out other problems, I had Mirena inserted 8 months ago to control disabling periods that were interfering with work, travel, and exercise and causing anemia. Insertion was less noticeable than pap test, with minimal cramping afterwards. Periods now range from light to fairly heavy, but all are manageable. No weight gain (I am slim) and no other noticeable side effects except for near constant spotting, heavy enough to need a small tampon for all but about one week per month. Annoying but much better situation than I had before so I am very glad I did it."