In the medical field, "DO" stands for "Doctor of Osteopathic Medicine." A DO is a fully trained and licensed physician who practices a holistic and whole- person approach to medicine. Compared to an MD (Doctor of Medicine), a DO not only uses conventional medical techniques like prescribing medications and performing surgeries but also emphasizes preventive care and the body's musculoskeletal system. DOs are trained in osteopathic manipulative treatment (OMT), a hands-on technique to diagnose, treat, and prevent illnesses by moving muscles and joints. DOs and MDs have similar education and training; both complete four years of medical school followed by internships, residencies, and fellowships. DOs have additional training in the musculoskeletal system and a philosophy that considers the interconnection of the body’s systems and the mind-body-spirit relationship. They strive to treat the whole person, not just symptoms. DOs can specialize in any area of medicine and are licensed to practice in all 50 states in the U.S. In summary, a DO is a physician who practices osteopathic medicine, focusing on holistic health, preventive care, and musculoskeletal treatment alongside conventional medicine practices. They have the same rights and responsibilities as MDs, including prescribing medications and performing surgeries. This distinction originated with Dr. Andrew Taylor Still in the 19th century, who founded osteopathic medicine to emphasize the body's natural healing and musculoskeletal health. This explanation captures the main definition and role of DOs in medicine. If you need details about training or differences from MDs, I can provide more information.