An endocrinologist is a medical doctor who specializes in diagnosing and treating disorders related to the endocrine system. This system includes glands that produce hormones, which regulate various bodily functions such as metabolism, growth, and mood. Common conditions treated by endocrinologists include diabetes, thyroid disorders, and hormonal imbalances. Endocrinologists often work closely with other healthcare professionals to provide comprehensive care. They may perform tests to measure hormone levels and recommend treatments, which can include medications, lifestyle changes, or hormone replacement therapy. Their expertise is crucial for managing chronic conditions and improving patients' overall health.