Endocrinology is the branch of medicine that focuses on the endocrine system, which is made up of glands that produce and release hormones. These hormones are chemical messengers that regulate various bodily functions, including metabolism, growth, and mood. Key glands in the endocrine system include the pituitary gland, thyroid gland, and adrenal glands. Endocrinologists are medical specialists who diagnose and treat hormone-related disorders. Common conditions they address include diabetes, thyroid disorders, and hormonal imbalances. By understanding how hormones affect the body, endocrinologists help manage these conditions to improve patients' overall health and well-being.