Immune-brain interaction refers to the communication between the immune system and the brain, which significantly influences both physical and mental health. For instance, inflammation triggered by stress, infection, or trauma can affect mood, cognition, and emotional regulation. This bidirectional relationship is central to a field called psychoneuroimmunology, which studies how mental and physical health are deeply intertwined. Understanding this interaction helps explain why mental health conditions like depression or anxiety can sometimes follow physical illness or stress. Therapeutic approaches may include nutrition, mindfulness, or stress reduction to support both brain and immune system health.

How to Get Reimbursed for Online Therapy in 2025
Step-by-step instructions to use insurance—or claim it back yourself—for online therapy in 2025, plus low-cost tips when you have no coverage.




