Could a poop pill help teens with anorexia?
NCT ID NCT06593366
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This pilot study tests whether fecal microbiota transplant (FMT) – taking capsules made from healthy donor stool – is a feasible and acceptable treatment for 20 teens (ages 12-17) with anorexia nervosa. Participants will take FMT or placebo capsules twice a day, twice a week for 8 weeks. The study will measure recruitment, retention, and changes in weight, gut bacteria, and mood.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- fecal microbiota transplant (FMT) from healthy donors
- What this could lead to
- If it works, this could point toward a new way to help teens with anorexia gain weight and feel better by restoring gut health.
- What could go wrong
- This is a very small pilot study (20 teens) testing only feasibility, not effectiveness. It may not show clear benefits, and the long-term safety of FMT in this group is unknown.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 20 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jun 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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12 to 17 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: All study subjects will have been diagnosed with AN (restricting type or binge eating/purging type) by the primary physician on the ED team, as per standard approach. Study participants will: * Be 12-17 years-old at time of recruitment * Have capacity to consent * Be assigned female sex at birth (may be gender diverse) * Be active patients in the pediatric ED program at MCH * Have a weight that is \<85% of the Treatment Goal Weight, as determined by the treating physician Exclusion Criteria: Potential study subjects will be excluded due to the following reasons: * Exposure to antibiotics within two weeks of study randomization * Initiation of new probiotics / oral nutritional supplements within two weeks of randomization * Active pregnancy * Active psychosis or suicidal ideation * Other comorbidities that may affect weight or the gut microbiome including celiac disease, inflammatory bowel disease (or other conditions as determined by the study team)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
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