Commentary: Safety and efficacy of a novel fecal microbiota transplantation method using hydrogen nanobubble water without antibiotics or bowel cleansing in children with autism spectrum disorder - Report - MDSpire

Commentary: Safety and efficacy of a novel fecal microbiota transplantation method using hydrogen nanobubble water without antibiotics or bowel cleansing in children with autism spectrum disorder

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  • David P. Ruttenberg

  • June 12, 2026

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Clinical Report: Safety and Effectiveness of Fecal Microbiota Transplantation in ASD

Overview

This report discusses a novel fecal microbiota transplantation technique using hydrogen nanobubble water in pediatric patients with autism spectrum disorder (ASD). The study observed a 29% reduction in Social Responsiveness Scale-2 scores over 30 weeks, indicating potential improvements in core symptoms, though methodological limitations exist.

Background

Fecal microbiota transplantation (FMT) has gained attention as a potential therapeutic strategy for autism spectrum disorder (ASD), particularly due to the gut-brain axis's role in neurodevelopment. Understanding the safety and efficacy of FMT in children with ASD is crucial, as current treatment options are limited and often ineffective. This study explores a novel FMT method that eliminates the need for antibiotics and bowel preparation, which could simplify the procedure and enhance patient compliance.

Data Highlights

No numerical data presented in the article.

Key Findings

  • The study reported a 29% reduction in SRS-2 total scores over 30 weeks.
  • 86.7% of participants were classified as severe on the SRS-2 at baseline.
  • The study's single-arm design limits the ability to attribute improvements specifically to the intervention.
  • Correlation between SRS-2 scores and Gazefinder eye-tracking data supports the validity of the SRS-2 as a measurement tool.
  • Secondary outcomes were exploratory and lacked correction for multiple comparisons.
  • The use of the PHQ-4 in children requires further validation and justification.

Clinical Implications

Clinicians should approach the findings with caution due to the study's methodological limitations, particularly the absence of a control group. While the observed reduction in SRS-2 scores is promising, further rigorous studies are necessary to confirm these results and establish the efficacy of this FMT technique in pediatric ASD.

Conclusion

The novel FMT technique using hydrogen nanobubble water shows potential for improving symptoms in children with ASD, but the need for controlled studies is critical to validate these findings.

Related Resources & Content

  1. Shirotani M et al., Front. Pediatr., 2026 -- Exploring the Safety and Effectiveness of a New Fecal Microbiota Transplantation Technique
  2. Journal of Crohn's and Colitis, 2023 -- Dynamics of Gut Microbiota After Fecal Microbiota Transplantation in Ulcerative Colitis
  3. The Journal of Infectious Diseases, 2023 -- Microbiome and Metabolome Restoration After Administration of Fecal Microbiota, Live-jslm (REBYOTA)
  4. The ASCO Post, 2025 -- Fecal Microbiota Transplantation Following ASCT
  5. AGA Clinical Practice Guideline, 2024 -- Fecal Microbiota–Based Therapies for Select Gastrointestinal Diseases
  6. Effect of oral faecal microbiota transplantation intervention for children with autism spectrum disorder, 2024 -- PubMed
  7. Assessment of the Microbiome and Fecal Microbiota Transplantation in Pediatric Gastroenterology: Findings from a Structured Online Survey in German-speaking Regions
  8. AGA Clinical Practice Guideline on Fecal Microbiota–Based Therapies for Select Gastrointestinal Diseases - ScienceDirect
  9. Effect of oral faecal microbiota transplantation intervention for children with autism spectrum disorder: A randomised, double-blind, placebo-controlled trial - PubMed
  10. Frontiers | Safety and efficacy of a novel fecal microbiota transplantation method using hydrogen nanobubble water without antibiotics or bowel cleansing in children with autism spectrum disorder: an open-label, single-arm study demonstrating improvements in core and comorbidity symptoms

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