Psychoneuroimmunology (PNI) is an interdisciplinary field that bridges several areas of science. It studies the interactions between psychological processes, the nervous system, and the immune system, focusing on how these systems influence each other and overall health. PNI falls under the following broader scientific categories: 1. **Biopsychology/Behavioral Neuroscience** It examines the biological basis of behavior, particularly how psychological factors affect physiological processes. 2. **Immunology** As it investigates the immune system’s role in response to stress and emotions, it aligns with immunological research. 3. **Psychology** Specifically, health psychology or clinical psychology, as it studies the impact of stress, emotions, and behaviour on health outcomes. 4. **Medicine** Particularly integrative or psychosomatic medicine, since PNI explores how mind-body connections contribute to health and disease. 5. **[[Systems Biology]]** It integrates multiple biological systems (nervous, immune, and endocrine) into a cohesive framework. In summary, Psychoneuroimmunology is best described as an **interdisciplinary field within biopsychology and integrative health sciences**. It combines principles of psychology, neuroscience, and immunology to understand the mind-body connection. `Concepts:` `Knowledge Base:` [[Biology]], [[Systems Theory]]