Effect of Postbiotic Bifidobacterium longum CECT 7347 on Gastrointestinal Symptoms, Serum Biochemistry, and Intestinal Microbiota in Healthy Adults: A Randomised, Parallel, Double-Blind, Placebo-Controlled Pilot Study

Effect of Postbiotic Bifidobacterium longum CECT 7347 on Digestive Health

Study Overview

This study evaluated the impact of heat-treated Bifidobacterium longum CECT 7347 (HT-ES1) on digestive symptoms in healthy adults. It was a randomised, double-blind, placebo-controlled trial with 60 participants over 8 weeks, followed by a check-in at week 10.

Key Methods

Researchers measured:

  • Gastrointestinal symptoms using various scales
  • Gut microbiome changes
  • Biochemical markers and physical measurements
  • Any adverse effects

Main Findings

The study found:

  • Small changes in digestive symptoms overall
  • A significant reduction in total and non-HDL cholesterol in the HT-ES1 group
  • An increase in beneficial gut bacteria linked to butyrate production
  • Stable levels of faecal calprotectin in the HT-ES1 group, while it increased in the placebo group

Conclusions

HT-ES1 may support gut health by:

  • Boosting butyrate-producing bacteria
  • Maintaining normal faecal calprotectin levels
  • Lowering serum cholesterol

Clinical Implications

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