A cardiac surgeon is a medical doctor who specializes in performing surgeries on the heart and blood vessels. They treat various heart conditions, such as coronary artery disease, heart valve disorders, and congenital heart defects. These surgeons use advanced techniques to repair or replace damaged heart structures, often employing minimally invasive methods when possible. To become a cardiac surgeon, one must complete extensive education and training, including medical school and a residency in general surgery, followed by a specialized fellowship in cardiac surgery. Their work is critical in improving patients' heart health and overall quality of life.