Internal medicine is a branch of medicine that focuses on the prevention, diagnosis, and treatment of diseases in adult patients. Internal medicine physicians, also known as internists, are trained to manage a wide range of health conditions, from common illnesses to complex diseases. They provide comprehensive care for their patients, often serving as primary care providers or working closely with specialists to coordinate care. Internal medicine encompasses a broad range of medical specialties, including cardiology, gastroenterology, nephrology, endocrinology, and infectious diseases. Research in internal medicine encompasses a wide variety of topics, such as clinical trials, disease prevention, epidemiology, and healthcare delivery.