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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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Bifidobacterium breve Rosell-70 and Improved Depressive Symptoms

Research synthesisLow evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful

Across 3 review-level studies, all reported beneficial effects of Bifidobacterium breve Rosell-70 on depressive symptoms, with effect sizes ranging from small to moderate. Two of the three studies reported statistically significant findings. The evidence base is limited to reviews, with no extracted data on dose, form, or study duration, so specific dosing or population guidance cannot be determined.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. All three studies are reviews, not primary RCTs, which limits the ability to draw causal conclusions. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). No dose, form, or duration data were extracted, so the specific conditions under which benefit was observed remain unclear.

Generated Jun 11, 2026
3 of 3 papers
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