Medical doctors, often referred to as physicians, are highly trained 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 skills needed to care for patients. Doctors can specialize in various fields, such as pediatrics, cardiology, or surgery, allowing them to focus on specific health issues. In their daily work, medical doctors examine patients, order tests, and prescribe medications to help manage health conditions. They also provide valuable advice on maintaining a healthy lifestyle, emphasizing the importance of preventive care to avoid future health problems.