The primary role of a doctor is to diagnose, treat, and prevent illnesses and injuries in patients. Doctors are trained medical professionals who utilize their knowledge of human anatomy, physiology, and medical science to provide care. They conduct physical examinations, order and interpret diagnostic tests, and develop treatment plans tailored to individual patient needs. Beyond treating physical ailments, doctors also play a crucial role in educating patients about health maintenance and disease prevention, ensuring that individuals understand their health conditions and the importance of following prescribed treatments.