Nutritional psychology is an interdisciplinary field that explores the relationship between nutrition and psychological processes involving cognition, emotions, behavior, psychosocial functioning, sensory perception, interoceptive experience, and mental health.
Nutritional Psychoneuroimmunology is an interdisciplinary field that integrates the study of nutrition, psychology, neurology, and immunology to investigate how dietary factors and nutrients can influence the interactions and communication between the nervous system, the immune system, and psychological processes.