The National Library of MedicineMedicine is the field of science and practice that deals with the prevention, diagnosis, treatment, and cure of disease. Think of it like this: • Your body is a complex machine. • Medicine is like a toolbox, and knowledge is… Read More (NLM) is the world’s largest biomedical library, located in Bethesda, Maryland, USA. It collects and preserves medical research and information, making it available to scientists, healthcare professionals, and the public.