High levels of the inflammatory biomarker C-Reactive Protein predict the effectiveness of antidepressant treatment. In patients with low inflammation, the treatment had no benefit over the placebo.
This is new research from Dr. Charles Raison. Check out my podcast with him to learn more about the role inflammation plays in mood disorders and how whole body hyperthermia (ie. sauna, hot bath, steam room, hot yoga) may improve depressive symptoms.
Dr. Raison episode: https://www.foundmyfitness.com/episodes/charles-raison