The menstrual cycle is a prime example of variability in gynecology. While a typical cycle is considered to be 28 days, many women experience cycles that can range from 21 to 35 days. Variability in the length, flow, and symptoms of menstrual cycles can be influenced by factors such as stress, diet, exercise, and underlying health conditions like polycystic ovary syndrome (PCOS) or thyroid disorders.
