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Evidence-Based Supplement Research
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Lactobacillus rhamnosus and Improved Glycemia

Research synthesisVery low evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful

Across 3 animal studies, all reported beneficial effects of Lactobacillus rhamnosus-containing interventions on glycemia, with effect sizes ranging from moderate to large. The only statistically significant finding was in a study that combined Gastrodia elata extract with probiotics in high-fat diet-fed mice, showing improvements in hyperglycemia and insulin resistance. No human studies or dose data are available, limiting applicability.

  • Studied populations: mice (db/db mouse model of type 2 diabetes, high-fat diet-fed mice, autochthonous lactobacilli from goat dairy products)

Caveats: All studies are in animal models (mice) — no human trial data available for this specific supplement-outcome pair. The third study used a combined intervention (Gastrodia elata extract plus probiotics), so the independent effect of L. rhamnosus is not isolated. Duration and dosing were not consistently reported, and the small number of studies limits confidence.

Generated May 11, 2026
3 of 3 papers
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