Bifidobacterium animalis subsp. lactis B420 and Improved Gut Microbiota Diversity

• Effect of probiotic supplementation on the gut microbiota diversity in healthy populations: a systematic review and meta-analysis of randomised controlled trials.

  • 2026-01-07
  • Meta-Analysis
  • BMC medicine 24(1)
  • • Anna Júlia Éliás
    • Kincső Csepke Földvári-Nagy
    • Yasmin Zubeida Al-Gharati
    • Dániel Sándor Veres
    • Tamás Schnabel
    • Brigitta Teutsch
    • Bálint Erőss
    • Péter Hegyi
    • Katalin Lenti
    • László Földvári-Nagy

  • PubMed: 41495831
  • DOI: 10.1186/s12916-025-04602-0

  3 Insights on

  • Improved Gut Microbiota Diversity

  • High evidence

  The quantitative synthesis revealed no statistically significant effects of probiotics on Shannon diversity ... observed operational taxonomic units ... Chao1 ... or Simpson's index of diversity ... compared to unsupplemented controls.

  Effect

  Neutral

  Effect size

  Small

  Significant

  No