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the claim
Probiotic supplementation significantly reduces total cholesterol and LDL-C levels in randomized clinical trials.
the verdict
CONTESTED
contested - evenly split
Recorded sources
3 sources for · 3 against
Is it true that probiotic supplementation significantly reduces total cholesterol and LDL-C levels in randomized clinical trials?
Partly. Evidence regarding the impact of probiotic supplementation on total cholesterol and LDL-C is mixed; while several meta-analyses report significant reductions in specific clinical populations, other randomized trials and reviews find no significant improvements.
Verdict: CONTESTED · 3 sources for, 3 against · Last checked
The analysis
The claim specifies that probiotic supplementation significantly reduces total cholesterol and LDL-C in randomized trials. Several recent meta-analyses (e.g., papers 4, 7, and 8) support this claim in specific patient groups such as those with PCOS, diabetic nephropathy, or MASLD. Conversely, other studies and meta-analyses (such as papers 0, 1, and 2) find no statistically significant effect on lipid profiles, indicating ongoing debate and variability across populations and probiotic strains. Thus, the verdict is CONTESTED.
The evidence we hold leans evenly split
How this was weighed
official record 3x · fact-check 2x · hedged 1x · crowd & reference 1x
- Efficacy of probiotic and synbiotic supplementation on metab · peer-reviewed · supports · weight 1 · 2026
- Clinical value of probiotics as adjunctive therapy for diabe · peer-reviewed · supports · weight 1 · 2026
- Effects of probiotics and synbiotics on liver enzymes, gluco · peer-reviewed · supports · weight 1 · 2026
- The efficacy of gut microbiota-regulating drugs on metabolic · peer-reviewed · refutes · weight 1.05 · 2026
- More than Hormones? Metabolic Effects of Twelve-Week Probiot · peer-reviewed · refutes · weight 1 · 2026
- Effects of probiotics combined with statins on blood lipids, · peer-reviewed · refutes · weight 1 · 2026
Evidence for · 3
A meta-analysis of randomized controlled trials found that probiotic and synbiotic supplementation significantly reduced LDL-C levels in patients with polycystic ovary syndrome.
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Z, S., R, Z., X, T., T, L., & Z, L. (2026). Efficacy of probiotic and synbiotic supplementation on metabolic and endocrine parameters in polycystic ovary syndrome: a meta-analysis of randomized controlled trials.. doi.org. https://doi.org/10.1186/s12902-026-02398-5
Evidence against · 3
A network meta-analysis of randomized controlled trials found no statistically significant differences between probiotics and controls regarding total cholesterol or other lipid markers.
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Y, W., J, O., H, Z., Y, S., & W, L. (2026). The efficacy of gut microbiota-regulating drugs on metabolic dysfunction-associated steatotic liver disease: a systematic review and network meta-analysis.. doi.org. https://doi.org/10.7717/peerj.21166
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More for · 2
A meta-analysis of randomized controlled trials in patients with diabetic nephropathy demonstrated significant reductions in both total cholesterol and LDL-C following probiotic supplementation.
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X, H., X, Y., Y, Y., J, H., W, T., R, Y., & X, L. (2026). Clinical value of probiotics as adjunctive therapy for diabetic nephropathy: a meta-analysis and trial sequential analysis.. doi.org. https://doi.org/10.3389/fnut.2026.1863111
A systematic review and meta-analysis indicated that probiotics and synbiotics significantly improved total cholesterol levels in patients with metabolic dysfunction-associated steatotic liver disease.
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Y, J., Y, S., & J, C. (2026). Effects of probiotics and synbiotics on liver enzymes, glucose and lipid metabolism, and inflammatory markers in patients with metabolic dysfunction-associated steatotic liver disease: a systematic review and meta-analysis.. doi.org. https://doi.org/10.3389/fnut.2026.1940415
More against · 2
A randomized, double-blind, placebo-controlled secondary analysis found that 12 weeks of multispecies probiotic supplementation did not significantly improve the lipid profile in women with PCOS.
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A, G., J, N., M, S., H, P., A, S., & I, S. (2026). More than Hormones? Metabolic Effects of Twelve-Week Probiotic Supplementation in Women with Polycystic Ovary Syndrome: A Secondary Analysis of a Randomized Double-Blind Placebo-Controlled Study.. doi.org. https://doi.org/10.3390/nu18183090
A systematic review and meta-analysis of clinical trials evaluating probiotics combined with statins reported no significant enhancement in LDL-C reduction compared to statin therapy alone.
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J, D., L, C., N, Z., & M, Y. (2026). Effects of probiotics combined with statins on blood lipids, TMAO, and inflammatory and oxidative stress markers in patients with atherosclerosis: a systematic review and meta-analysis.. doi.org. https://doi.org/10.3389/fcvm.2026.1897708
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