An endocrinologist is a specialist who is trained in the field of Internal Medicine and specializes in the study and the treatment of hormonal imbalances or disorders in the body. Endocrinologists study the pancreas, which is a major part of the endocrinal system and also study insulin-related problems. Apart from diagnosing hormonal complications, endocrinologists are responsible in charting the recovery of their patients and also providing respite in terms of restoring the hormonal balance in the body. Endocrinologists specifically deal with hormonal problems related to diabetes, thyroid, infertility, early puberty, specific endocrinal cancers, menopause, growth-related issues, osteoporosis, over/under-production of hormones and various other metabolic diseases. As the endocrinology department is one of the most difficult medical departments to get into, it requires multidisciplinary training in a wide array of subjects and also intensive, selective studying for a period of 7-10 years after medical school. In modern times, there is a proliferation of renowned endocrinologists all over the world because of the rise in hormonal problems in people, owing to factors like lifestyle, eating habits and genetics. Here we bring you a compilation of biographies of some of the most famous endocrinologists. To learn more fascinating facts and details about them, read their biographies that include trivia, interesting facts, timeline and life history.