Key result
Resveratrol lowers blood pressure, lipids, insulin resistance, and inflammation vs placebo in obesity-related metabolic disorders.
Why the study?
Evidence from RCTs on resveratrol is inconsistent and commercial products vary, leaving uncertainty about its true efficacy in obesity-related non-communicable diseases.
Does resveratrol supplementation improve metabolic and inflammatory parameters in adults with obesity-related metabolic disorders?
Meta-Analysis (n=2,551)
Does resveratrol supplementation improve metabolic and inflammatory parameters in adults with obesity-related metabolic disorders?
Effect estimate: Standardized mean differences with significant reductions in HOMA-IR, TC, TG, LDL, SBP, DBP, hs-CRP, TNF-α, IL-6 reported
p-value: p<0.05 for significant outcomes
Resveratrol supplementation provides modest benefits for specific lipid, glycemic, and inflammatory markers in obesity-related metabolic disorders, but does not broadly improve all risk factors such as body weight or liver fat.
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Modest, selective benefits in obesity-related metabolic disorders temper expectations for broad improvement; reinforces surrogate marker data but leaves clinical outcomes unproven.
Background/Aim: Resveratrol, a polyphenolic compound found in grapes, berries, and peanuts, has been linked to antioxidant, anti-inflammatory, and vasoprotective effects. Yet, evidence from randomized controlled trials (RCTs) remains inconsistent, and the quality, dosage, and cost of commercial resveratrol products vary considerably, raising uncertainty about their true efficacy. A comprehensive synthesis of its effects on obesity-related non-communicable diseases (NCDs) is therefore warranted. Given that obesity is a key driver of metabolic dysregulation underlying diabetes, cardiovascular disease, and fatty liver disease, clarifying resveratrol’s potential in overweight and obese populations is of particular importance. Materials and Methods: We systematically searched PubMed, Embase, the Cochrane Library, and Web of Science for RCTs published up to July 2025 that evaluated resveratrol supplementation in adults with obesity-related metabolic disorders or associated risk factors. Study selection and data extraction followed PRISMA 2020 guidelines. Pooled estimates were calculated using random-effects models, and heterogeneity was assessed with the I² statistic. Results: Forty RCTs involving 2551 participants were included. Resveratrol significantly reduced the homeostatic model assessment of insulin resistance (HOMA-IR), total cholesterol (TC), triglycerides (TG), low density lipoprotein (LDL) cholesterol, systolic blood pressure (SBP) and diastolic blood pressure (DBP), high-sensitivity C-reactive protein (hs-CRP), tumor necrosis factor-alpha (TNF-α), and interleukin-6 (IL-6). No consistent changes were observed for high-density lipoprotein (HDL) cholesterol, body weight (BW), body mass index (BMI), fat mass, hip circumference (BC), waist circumference (WC), aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), or liver fat. To our knowledge, this meta-analysis includes the largest number of RCTs to date and the most comprehensive coverage of obesity-related metabolic and inflammatory endpoints. Effect sizes varied by intervention dose and duration. Conclusion: Resveratrol supplementation shows modest benefits on selected metabolic and inflammatory parameters but does not exert broad effects across all obesity-related NCD risk factors. Its potential role may be most relevant in populations with metabolic disturbances. Large-scale, long-term RCTs are warranted to clarify optimal dosing strategies and establish its utility in the prevention and management of obesity-related non-communicable diseases.
Shen et al. (2026) conducted a meta-analysis in Adults with obesity-related metabolic disorders or associated risk factors including T2DM, NAFLD, metabolic syndrome, and dyslipidemia (n=2,551). Resveratrol supplementation vs. Placebo or standard care was evaluated on Metabolic and inflammatory parameters including HOMA-IR, total cholesterol, triglycerides, LDL cholesterol, systolic and diastolic blood pressure, hs-CRP, TNF-α, IL-6, fasting glucose, fasting insulin, HbA1c, liver enzymes (ALT, AST, GGT) (Standardized mean differences with significant reductions in HOMA-IR, TC, TG, LDL, SBP, DBP, hs-CRP, TNF-α, IL-6 reported, p=p<0.05 for significant outcomes). Resveratrol supplementation significantly reduced insulin resistance (HOMA-IR), total cholesterol, triglycerides, LDL cholesterol, systolic and diastolic blood pressure, and inflammatory markers (hs-CRP, TNF-α, IL-6) in adults with obesity-related metabolic disorders compared to placebo.
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