CAUSES OF AUB Every woman's period (menstrual cycle) is different. On average, a woman's period occurs every 28 days. Most women have cycles between 24 and 34 days apart. It usually lasts 4 to 7 days. Young girls may get their periods anywhere from 21 to 45 days or more apart. Women in their 40s may start to have their period less often or have the interval between their periods decrease. For most women, female hormone levels change every month. The hormones estrogen and progesterone are released as part of the process of ovulation. When a woman ovulates, an egg is released. AUB can occur when the ovaries do not release an egg. Changes in hormone levels cause your period to be later or earlier. Your period may sometimes be heavier than normal. AUB is more common in teenagers or in premenopausal women. Women who are overweight also may be more likely to have AUB. In many women, AUB is caused by HORMONAL IMBALANCE. It can also occur due to the following causes: Thickening of the uterine linin Uterine fibroids Uterine polyps Cancers of ovaries, uterus, cervix, or vagina Bleeding disorders or problems with blood clotting PCOS Severe weight loss Hormonal birth control, such as birth control pills or intrauterine devices (IUD) Excessive weight gain or loss (more than 10 pounds or 4.5 kilograms) Infection of the uterus or cervix To be continued::::;; dr Nandini shete