Hormonal changes refer to fluctuations in the levels of hormones in the body, which can occur due to various factors such as age, stress, and health conditions. These changes can affect physical and emotional well-being, influencing mood, energy levels, and even metabolism. For example, during puberty, the body experiences significant hormonal changes that lead to growth and development. In women, hormonal changes are particularly notable during the menstrual cycle, pregnancy, and menopause. The hormones estrogen and progesterone play key roles in regulating these processes. In men, testosterone levels can also fluctuate with age, impacting mood and physical health. Understanding these changes is essential for managing health effectively.