The endocrine system is responsible for producing and regulating hormones — chemical messengers that control and coordinate various functions in the body, including metabolism, growth, mood, sexual function, and sleep. This system is made up of glands such as the pituitary, thyroid, adrenal, pancreas, and ovaries/testes, each of which releases specific hormones into the bloodstream. These hormones travel to target organs and tissues to trigger or regulate physiological processes. For example, the pancreas produces insulin to regulate blood sugar, while the thyroid releases hormones that control metabolism. The endocrine system works closely with the nervous system, but it governs long-term, slower processes rather than immediate responses. Hormonal imbalances can lead to a wide range of disorders, such as diabetes, hypothyroidism, or adrenal fatigue. Understanding the role of the endocrine system is essential for grasping how the body maintains homeostasis. Simply put, the endocrine system is the body’s command center for hormone control.