An endocrinologist is a medical professional specialized in the diagnosis and treatment of disorders of hormone-secreting (endocrine) glands in the human body. He is trained to treat disorders of thyroid, pituitary, pancreas, etc. that produce hormones.

You can meet an endocrinologist if you notice symptoms of hormone-related diseases like sudden weight loss or gain, acne, facial hair in women, infertility, feeling too tired easily, severe hair loss, feeling too cold or too hot, change in voice, etc.

The endocrinologist can treat diseases of like hypo or hyper-thyroidism, reduced or excess insulin production, gigantism, dwarfism, Cushing's syndrome, hypo or hyper-pituitarinism, PCOD, infertility, etc.

An endocrinologist has to take at least 10 years of training, which has 4 years of medical school (MBBS), followed by a residency period of 3 years to gain expertise in treating the patient. They have an additional 2 or 3 years of training in endocrinology (MD or DM).

An endocrinologist or a reproductive endocrinologist who is specialized in sex hormones can treat and help in managing PCOD.