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Could a High-Fat diet reset energy in long COVID?

NCT ID NCT07745699

Symptom relief Sponsor: National University of Natural Medicine Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 04, 2026 · Last updated Aug 07, 2026 · Updated 3 times

Summary

This trial tests whether a 12-week ketogenic diet program, delivered entirely online, is practical and acceptable for adults with Long COVID who also have ME/CFS and dysautonomia. Participants follow a low-carb, high-fat diet with vitamin B1 and electrolyte support, plus weekly virtual nutrition coaching. The study tracks adherence, safety, and satisfaction, and also measures changes in fatigue, sleep, mood, and daily functioning. The goal is to see if this remote approach could be a viable way to ease symptoms and improve quality of life.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Ketogenic metabolic therapy (a low-carb, high-fat diet with vitamin B1 and electrolyte support, delivered via telehealth)
What this could lead to
If successful, this could point toward a practical, home-based dietary approach to ease fatigue and autonomic symptoms in Long COVID, potentially improving daily functioning and quality of life.
What could go wrong
This is a small feasibility study with only 11 participants, so results may not apply broadly. The diet is restrictive and may be hard to follow, and benefits are not guaranteed.

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

11 people

The number who actually took part.

Started

Dec 2024

Finished

Jun 2025

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 years and older

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: Age 18 years or older English-speaking Suspected, probable, or confirmed SARS-CoV-2 infection as defined by the Pan American Health Organization Long COVID diagnosed via structured clinical interview, consistent with the World Health Organization clinical case definition and the National Academies of Sciences, Engineering, and Medicine (2024) definition Physician-confirmed diagnosis of post-infectious dysautonomia and ME/CFS; OR self-reported dysautonomia symptoms with a Malmö POTS Score Assessment (MAPS) score greater than 40 Met the National Academy of Medicine diagnostic criteria for ME/CFS Exclusion Criteria: * Known pregnancy or planning pregnancy during the study period Active cancer diagnosis Renal or liver failure Pancreatitis Atrial fibrillation or significant cardiac arrhythmia Significant atherosclerotic disease Uncontrolled hypertension or hypertriglyceridemia Active or recent thrombosis Use of antiepileptic medications Use of SGLT-2 inhibitors Substance use disorder Type I diabetes History of inborn errors of metabolism Previous completion of a nutritional and lifestyle program for this condition

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Conditions

The condition(s) this trial relates to.

long COVID-19 myalgic encephalomeyelitis/chronic fatigue syndrome postural orthostatic tachycardia syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Long COVID fatigue Post COVID dysautonomia

Contacts and locations

Locations

  • National University of Natural Medicine

    Portland, Oregon, 97229, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.