What field studies the health effects of psychological, neural, and endocrine processes on the immune system?

• A. Psychoimmunology
• B. Psychoneurology
• C. Neuroimmunology
• D. Psychoneuroimmunology

Answer: (C)

The main idea is how the nervous system communicates with the immune system and how signals from the brain and hormones can shape immune function and health outcomes. Neuroimmunology focuses on these neural–immune interactions, including how neural activity and endocrine (hormonal) signals influence immune responses. That direct link between brain, hormones, and immunity is exactly what the question describes, making this field the best fit among the options. While terms like psychoneuroimmunology highlight the role of psychological factors explicitly, the emphasis here on neural and endocrine pathways affecting immunity aligns with neuroimmunology as the core focus.