Maslow's hierarchy of needs theory proposes that human motivation is based on five basic needs arranged in a hierarchy: physiological, safety, love and belonging, esteem, and self-actualization. Lower level needs must be satisfied before higher level needs can be fulfilled. This theory is important for nursing care because it emphasizes meeting patients' basic physiological and safety needs before addressing higher level psychological needs. Nurses should evaluate and address patients' physical, mental, emotional, and social needs holistically to encourage improved health outcomes.