Overview
The Mediterranean diet demonstrated broad symptomatic improvement in fibromyalgia across multiple domains in an RCT (n=84), including pain, disability, fatigue, anxiety, and depression at 2 months.
Mechanism
- Anti-inflammatory: Olive oil polyphenols (oleocanthal), omega-3 fatty acids, and flavonoids reduce NF-kB activation and pro-inflammatory cytokine production
- Microbiome modulation: High fiber content promotes SCFA-producing taxa, improving gut barrier integrity and reducing bacterial translocation
- Tryptophan metabolism: Adequate dietary tryptophan and a healthy microbiome favor serotonin synthesis over kynurenine pathway activation
- Oxidative stress reduction: Antioxidant-rich foods counteract mitochondrial dysfunction observed in fibromyalgia
Clinical Evidence
RCT (n=84) at 2 months demonstrated statistically significant improvements in:
- Pain intensity and widespread pain index
- Disability and functional limitation
- Fatigue severity
- Anxiety and depression scores
The breadth of improvement across domains suggests a systemic mechanism rather than a single-target effect.
Clinical Considerations
- Sustainable long-term dietary pattern with strong adherence evidence
- May reduce need for polypharmacy in fibromyalgia management
- Compatible with other fibromyalgia interventions (exercise, sleep hygiene)