Surprising
In a review of 20 pain trials, capsaicin ranked highest for improving anxiety and depression — but the benefit appeared only in people with neuropathic pain.
This finding comes from a network meta-analysis of clinical pain patients, not the general population, so it doesn't mean eating chili peppers will lift your mood if you're healthy.
A systematic review of 20 randomized controlled trials in people with neuropathic pain ranked capsaicin (the compound that makes chili peppers hot) as the most effective intervention for improving anxiety and depression scores, outperforming other bioactive compounds tested. Because the studies were done in a clinical population and blinding was not applicable, the result may not generalize to healthy people looking to improve their mood through diet.
Where this fits in the evidence
This is among the first studies we've indexed on Chili Pepper for Reduced Anxiety and Depression (HADS) — treat it as an early signal until more research accumulates.
The study
- Systematic Review
- n = 471
- 2025-10-17
- Frontiers in pharmacology
This is a plain-language summary of a research finding, not medical advice. Pillser surfaces research signals to help you decide what's worth investigating — always consult a qualified professional before changing what you take.