Endocrinology is the study of medicine that relates to the endocrine system, which is the system that controls hormones. Endocrinologists are specially trained physicians who diagnose diseases related to the glands. Because these doctors specialize in these conditions, which can be complex and have hard-to-spot symptoms, an endocrinologist is your best advocate when dealing with hormonal issues. Most patients begin their journey to the endocrinologist with a trip to their primary care provider or family doctor. This doctor will run a series of tests to see what could be the potential problem the patient is facing. If a problem with the hormones is suspected, the primary care doctor will provide a referral. The endocrinologist's goal is to restore hormonal balance in the body.