Hormone therapy involves replacing the hormones that decline during perimenopause and menopause. Perimenopause can begin as early as age 38, while menopause is defined as the stage of life when you have not had a menstrual cycle for one year. Replenishing these hormones as they decline can help alleviate symptoms such as hot flashes, joint pain, mood swings, reduced libido, and low energy levels, ultimately improving overall well-being.