Blood coming from the uterus for a longer duration than usual or at irregular periods can be a sign of abnormal uterine bleeding. This bleeding may present itself in various forms, it can be lighter or heavier than usual, occur randomly, or co-occur due to health and lifestyle factors. Individuals might experience bleeding or spotting between periods, heavier flows during their periods, or bleeding that lasts for more days following an irregular period. Abnormal uterine bleeding might be noticed after sexual intercourse or following menopause. Abnormal uterine bleeding is often attributed to hormonal imbalances, particularly when the egg is not released from the ovaries, leading to disruptions in estrogen and progesterone levels. These hormonal changes can make periods arrive earlier or later than expected or present differently in terms of flow and duration. The menstrual cycle, which can vary from every 24 to 34 days and usually lasts between four and seven days, is subject to change due to a variety of factors as a woman ages, especially as she approaches her 40s. The frequency of periods may decrease, or the intervals between them may shorten. Besides hormonal imbalance, other causes of abnormal uterine bleeding include uterine fibroids, polyps, a thickening of the uterine wall, bleeding disorders, and infections of the cervix or uterus. Factors such as severe weight loss, the use of hormonal birth control, polycystic ovary syndrome (PCOS), and even certain types of cancer can contribute to the condition. While some causes are more prevalent in women of specific ages or health statuses, abnormal uterine bleeding can affect individuals across all ages and health statuses.