Medicine is the branch of science and practice that is concerned with the diagnosis, treatment, and prevention of disease. It encompasses a wide range of specialties, including internal medicine, surgery, paediatrics, obstetrics and gynaecology, and psychiatry, among others. Medical practitioners use their knowledge of anatomy, physiology, and pathology, along with various diagnostic tools and treatments, to diagnose and treat patients with various health conditions. The goal of medicine is to improve the health and wellbeing of individuals and populations by preventing and treating diseases and injuries, and promoting healthy lifestyles.