Research synthesisLow evidenceSmall effect4 studies · 2 beneficial · 2 neutral · 0 harmful
Across 4 meta-analyses/reviews, 2 reported statistically significant beneficial effects of garlic on triglyceride levels, with effect sizes ranging from small (e.g., WMD -0.17 mmol/L in dyslipidemia patients) to moderate (SMD -0.66 in metabolic syndrome patients). The other 2 found no significant effect. The overall evidence is mixed, and benefits were observed primarily in clinical populations with metabolic syndrome, dyslipidemia, or type 2 diabetes. No consistent dose or form data were reported across studies.
- Studied populations: adults with metabolic syndrome, dyslipidemia, or type 2 diabetes
Caveats: Evidence is inconsistent across meta-analyses; a 2023 meta-analysis showed moderate benefit (SMD -0.66) while a 2024 meta-analysis found no significant effect. All included studies are meta-analyses or reviews, which may incorporate overlapping primary trials, and the small overall number of analyses (4) limits certainty. Lack of reported dose and form data precludes specific supplementation recommendations. The clinical relevance of the observed small effects is uncertain.
Generated Jun 13, 2026