Research synthesisModerate evidenceModerate effect5 studies · 4 beneficial · 1 neutral · 0 harmful
Across 5 studies, 4 reported beneficial effects of turmeric (curcumin) on reducing C-reactive protein levels, with effect sizes predominantly moderate. The evidence is drawn largely from meta-analyses in clinical populations (rheumatoid arthritis, type 2 diabetes, metabolic syndrome) and one null trial in athletes. Median study duration was 42 days (from one study), and the only reported dose was 2 g/day.
- Studied populations: clinical populations (rheumatoid arthritis, type 2 diabetes, metabolic syndrome)
Caveats: The majority of studies are meta-analyses of randomized trials, but one meta-analysis is rated very low quality and reports an unusually large effect (SMD = −2.91). The only null trial was in a small sample of athletes (n = 15), suggesting the effect may be less consistent in athletic populations. Doses and forms were poorly reported across studies, limiting dose-specific recommendations.
Generated Jul 12, 2026