Perimenopause is the transitional phase leading up to menopause. During this stage, the ovaries gradually produce less estrogen and progesterone, the hormones that regulate the menstrual cycle and influence many systems in the body. Cycles may become irregular, shorter, longer, heavier, or lighter. Women commonly experience symptoms such as hot flashes, night sweats, sleep disturbances, mood changes, and difficulty concentrating. Perimenopause can last several years and is often the most symptomatic stage because hormone levels fluctuate unpredictably rather than decline steadily.

​

Menopause is a clinical milestone rather than a long phase. It is officially diagnosed after twelve consecutive months without a menstrual period, provided there is no other medical cause. The average age of menopause in the United States is approximately 51. At this point, the ovaries have largely stopped releasing eggs and estrogen levels stabilize at a lower baseline. While some symptoms may continue, menopause itself marks the conclusion of the reproductive years and the transition into a new hormonal state.

Postmenopause begins after the one-year mark without menstruation and continues for the remainder of a woman’s life. Hormone levels remain consistently lower during this stage. For many women, symptoms such as hot flashes gradually lessen over time. However, long-term health considerations become more important. Reduced estrogen can influence bone density, cardiovascular health, and genitourinary function, making preventive care and lifestyle strategies essential during these years.