MEMES on Instagram: "😭😭 A doctor is a trained medical professional who helps keep people healthy, diagnoses illnesses, and treats injuries or diseases. Doctors study the human body, learn how different systems work, and use that knowledge to care for patients. There are many types of doctors — some treat general health problems (like family doctors), while others focus on specific areas such as the heart (cardiologists), brain (neurologists), or children (pediatricians)."