Investigating gut microbiota in children with epilepsy on a ketogenic diet

The Role of Gut Microbiota in Children With Epilepsy Following Ketogenic Diet

Observational Attikon Hospital · NCT05898438

This study is testing how a special diet might change the gut bacteria in children with epilepsy to see if those changes help control their seizures better.

Quick facts

Study typeObservational
Enrollment20 (estimated)
Ages2 Years to 18 Years
SexAll
SponsorAttikon Hospital Academic / other
Locations1 site (Athens, Haidari)
Trial IDNCT05898438 on ClinicalTrials.gov

What this trial studies

This observational study aims to explore the changes in gut microbiota in children aged 2-18 years with epilepsy who are eligible for a ketogenic diet. Participants will provide stool samples before and three months after starting an olive oil-based ketogenic diet therapy. The study seeks to determine if specific populations of gut microorganisms are linked to improved seizure control in these children. Additionally, a parent of each participant will also contribute a fecal sample for analysis.

Who should consider this trial

Good fit: Ideal candidates for this study are children aged 2-18 years with drug-resistant epilepsy or specific metabolic conditions requiring a ketogenic diet.

Not a fit: Patients with systematic diseases such as inflammatory bowel disease, cancer, autoimmune disorders, or those currently taking antibiotics or probiotics may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could enhance understanding of how gut microbiota influence seizure control, potentially leading to improved dietary interventions for children with epilepsy.

How similar studies have performed: While some studies have suggested a link between gut microbiome and seizure control, this specific investigation into the ketogenic diet's impact on gut microbiota is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* type of epilepsy requiring ketogenic diet (drug-resistant epilepsy or Glut 1 DS or PDHD)
* eligibility for ketogenic diet according to ILAE
* no antibiotic intake for at least 2 months before the beginning of the study
* no probiotics or prebiotics intake for at least 2 weeks before the beginning of the study

Exclusion Criteria:

- systematic diseases (e.g. inflammatory bowel disease, cancer, autoimmune and cardiometabolic diseases)

Where this trial is running

Athens, Haidari

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Epilepsyketogenic dietepilepsychildrengut microbiota
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.