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Fasting without fasting: diet mimicry may ease colitis symptoms

NCT ID NCT03615690

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether a special 5-day diet that mimics fasting can lower inflammation and improve quality of life in people with mild to moderate ulcerative colitis. Participants will follow the diet for three cycles while researchers track symptom changes. The goal is to see if this safe, food-based approach can be a simple way to manage UC.

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

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

About 75 people

The number the study aims to enrol. It can still change while the study runs.

Started

Dec 2020

Expected to finish

Dec 2028

An estimate. End dates often move.

Lead sponsor

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

18 to 70 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Mild to moderate Ulcerative Colitis on the partial Mayo Score out of 9 (score between 2 to 7) * Age of 18-70 at start of study (inclusive) Exclusion Criteria: * Women who are pregnant or nursing or expect to be pregnant * Individuals allergic to nuts * Individuals with a body mass index (BMI) lower than 18 * Individuals diagnosed with a serious medical condition as defined by the patient's physician, unless approved in writing by a physician * Individuals who have been severely weakened by a disease or medical procedure, * Individuals who are taking medication which may not be safely consumed with a calorie restricted diet * Individuals with diabetes who are taking anti-diabetic drugs associated with risk of hypoglycemia * Individuals with more than mild-moderate cardiovascular disease or life-threatening cancer (as determined by patient's physician) unless approved by a physician * Individuals with history of severe cardiac disease (particularly uncompensated congestive heart failure NYHA grade 2 or more or LVEF \< 40%) * Individuals with a history of syncope * Individuals with dietary needs incompatible with the FMD meal plan * Individuals with liver or kidney disorders that may be affected by very low glucose and protein content of the diet. * Patients on a caloric restricted diet will also be excluded. * Patients with relevant prior gastrointestinal surgery and consequences such as short bowel syndrome, ostomy of small or large intestine, hemi- or total colectomy, proctocolectomy, ileoanal pouch will be excluded.

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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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  1. The places running it

    1 site. The list below names each one and where it is.

  2. 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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  3. A doctor treating you

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Contacts and locations

Locations

  • Stanford University

    RECRUITING

    Palo Alto, California, 94305, United States

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