Cited by 143Probiotics and Fermented FoodsGut microbiota and healthLipoproteins and Cardiovascular Health

Effect of Probiotics on Blood Lipid Concentrations: A Meta-Analysis of Randomized Controlled Trials

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Cho, Young Ae, Kim, Jeongseon·2015·Medicine

Abstract

Previous clinical studies have reported mixed results regarding the effect of probiotics on lipid metabolism. Therefore, we conducted a meta-analysis of randomized controlled trials to quantify the direction and magnitude of the potential effect of probiotics on blood lipid concentrations.Eligible studies were randomized, placebo-controlled trials whose interventions were probiotic products containing live bacteria. The studies reported net changes in lipid profiles (total cholesterol, LDL cholesterol, HDL cholesterol, and triglycerides) and their associated standard deviations (or the data to calculate them). The probiotic products did not contain prebiotics or other active ingredients, and the full article was accessible in English.The pooled mean net change in lipid profiles and 95% confidence intervals (95% CIs) were calculated. Q statistics and I were calculated to examine heterogeneity. Potential sources of heterogeneity were investigated via subgroup and sensitivity analyses, and publication biases were estimated.A total of 30 randomized controlled trials with 1624 participants (828 in intervention groups and 796 in placebo groups) were included in this analysis. Subjects treated with probiotics demonstrated reduced total cholesterol and LDL cholesterol compared to control subjects by 7.8 mg/dL (95% CI: -10.4, -5.2) and 7.3 mg/dL (95% CI: -10.1, -4.4), respectively. There was no significant effect of probiotics on HDL cholesterol or triglycerides. The effect of probiotics on total cholesterol and LDL cholesterol depended on a variety of factors. The significant effects were greater for higher baseline total cholesterol levels, longer treatment durations, and certain probiotic strains. In addition, these associations seem stronger in studies supported by probiotics companies.The studies included in this meta-analysis showed significant heterogeneity as indicated by the Q statistics and I. In addition, industry sponsorship may affect study findings.These results suggest that the use of probiotics may improve lipid metabolism by decreasing total and LDL cholesterol concentrations. However, both the efficacy of probiotics for cholesterol lowering and safety should be investigated further in well-designed clinical trials.

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Authors
Cho, Y. A., & Kim, J.
Affiliations
National Cancer Center (KR)
Corresponding author
Kim, Jeongseon
Venue
Medicine
Published
2015-10
Volume
94
Issue
43
Pages
e1714
ISSN
0025-7974 (ISSN-L)
OpenAlex
W2327041417
Cited by
143
References
53
Citations by year
2026: 9 · 2025: 15 · 2024: 12 · 2023: 11 · 2022: 18 · 2021: 16 · 2020: 13 · 2019: 13 · 2018: 15 · 2017: 17 · 2016: 4
FWCI
1.54
Type
journal article
Language
en
Open access
Licence
cc-by-nc
Locations
  • Medicine (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
  • Health Sciences › Medicine › Surgery › Lipoproteins and Cardiovascular Health
Keywords
probiotics, blood lipid concentration, lipid metabolism, total cholesterol, LDL cholesterol, HDL cholesterol, triglycerides, cholesterol lowering, probiotic strains, treatment duration
MeSH terms
Humans, Cholesterol, LDL, Randomized Controlled Trials as Topic, Probiotics, Lipid Metabolism

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