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Keto Diet's impact on cholesterol examined in tiny study

NCT ID NCT03901014

Knowledge-focused Sponsor: Touro University, California 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This completed study looked at how a very low-carbohydrate (ketogenic) diet changes the way the body makes cholesterol, fatty acids, and ketones. Four healthy men followed both a standard American diet and a ketogenic diet to compare the effects. The goal was to understand the body's fat and cholesterol production, not to treat any disease.

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

4 people

The number who actually took part.

Started

Mar 2019

Finished

Apr 2019

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 50 years

Sex

Male participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Male * 18-50 years old Exclusion Criteria: * Use of nicotine products * Has dietary restrictions * Lactose intolerance * History of GI disorders, diabetes, liver, kidney, or thyroid disorders * Taking hypolipidemic, anti-diabetic, anti-hypertensive, or anti-depression medication * Screening plasma triglyceride \< 50mg/dl or \>500mg/dl * Screening glucose \> 125mg/dl * Screening total and LDL-Cholesterol over 95th %tile for age and sex * BP \> 160/95 mmHg * Weight loss/gain \> 5% in the previous 3 months (self-reported)

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Conditions

The condition(s) this trial relates to.

cholesterol metabolism disease

As listed by the trial registrant

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

Cholesterol metabolism Ketone metabolism

Contacts and locations

Locations

  • Touro University California

    Vallejo, California, 94592, United States

More trials for these conditions

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