Nursing theories provide a framework for understanding and analyzing the practice of nursing. They help nurses to identify and articulate the core concepts, values, and beliefs that guide their practice. Nursing theories also help to explain the relationships between different aspects of nursing care, such as the nurse-patient relationship, the impact of the environment on health, and the role of the nurse in promoting health and wellness. Additionally, nursing theories can inform research, education, and policy development in the field of nursing.