Nursing may be a profession within the health care sector focused on the care of people, families, and communities in order that they may attain, maintain, or recover optimal health and quality of life. Nurses could also be differentiated from other health care providers by their approach to patient care, training, and scope of practice. Nurses practice in many specialties with differing levels of prescription authority. Many nurses provide care within the ordering scope of physicians, and this traditional role has shaped the general public image of nurses as care providers. However, nurse practitioners are permitted by most jurisdictions to practice independently during a sort of setting. Since the postwar period, nurse education has undergone a process of diversification towards advanced and specialized credentials, and lots of the normal regulations and provider roles are changing.