Medical doctors, often referred to as physicians, are professionals who diagnose and treat illnesses and injuries. They complete extensive education, including a bachelor's degree, medical school, and residency training, to gain the necessary skills and knowledge. Medical doctors can specialize in various fields, such as pediatrics, cardiology, or surgery. In their practice, medical doctors perform physical examinations, order tests, and prescribe medications. They also provide preventive care and health education to help patients maintain their well-being. Their primary goal is to improve patient health and manage diseases effectively.