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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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Bifidobacterium bifidum Rosell-71 and Improved Cognitive Function

Research synthesisLow evidenceMixed effect size3 studies · 3 beneficial · 0 neutral · 0 harmful

All 3 studies report beneficial effects on cognitive function, but only one (a meta-analysis) reached statistical significance and found a large effect (SMD -0.90; p=0.01). The remaining two reviews indicate small to moderate benefits. However, the evidence base is very small and indirect—most studies evaluated probiotics generally or synbiotics, not Bifidobacterium bifidum Rosell-71 specifically.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. 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). Many of the included studies did not reach statistical significance — effect may be smaller than the predominant direction suggests. Additionally, the studies assessed probiotics or synbiotics broadly, not specifically Bifidobacterium bifidum Rosell-71, and no dose, form, or duration data were reported.

Generated May 12, 2026
3 of 3 papers
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