Hormone Replacement Therapy (HRT) is a medical treatment that involves replacing hormones in your body, primarily estrogen and progesterone. These hormones play crucial roles in regulating your menstrual cycle, fertility, and overall health. This treatment can help balance hormone levels, supplementing or replacing the hormones your body naturally produces. It's often used to alleviate symptoms caused by hormonal imbalances, such as hot flashes, mood swings, and vaginal dryness.