Everyone knows that medical school takes many years of hard work, long hours, patience and dedication, but what exactly does it take to become an expert in a specific field. Only the most skilled and passionate doctors usually end up becoming internal medicine experts and choosing a specialty area such as gastroenterology. Some even become more technical and become experts in a very small area, concentrating on specific diseases or a specific organ. These doctors help patients prevent diseases and live happier, more productive lives in comfort. So what exactly does it take to become a specialized healer?