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Fasting for 24 hours: surprising effects on blood sugar and fats revealed

NCT ID NCT07250191

Knowledge-focused Sponsor: University of Bath 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looked at how a single day of either complete fasting or eating very few carbs changes the way healthy adults process sugar and fats after their next meal. Sixteen participants tried all three eating patterns in random order. Researchers measured blood sugar, fats, and related markers for two hours after a standard meal. The goal was to better understand how short-term dietary changes affect metabolism.

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

16 people

The number who actually took part.

Started

Oct 2023

Finished

Nov 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 to 40 years

Sex

Anyone

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: * Aged between 18-40 years * Have a BMI of 18.5-29.9 kg/m2 Exclusion Criteria: 1. Diagnosed with any major chronic conditions (e.g. type 2 diabetes, coronary heart disease, cancer, chronic kidney disease, etc.) 2. Use of medication that may interfere with study outcomes (e.g. glucose or lipid-lowering medications) 3. Currently or recently pregnant (within last 6 months), planning to get pregnant or currently lactating 4. Has a habitually low carbohydrate intake (\<150g carbohydrates/day) 5. Current or previous eating disorder 6. Has donated more than 500ml of blood in the last 3 months prior to the initial laboratory visit 7. Insufficient mental capacity or language skills to independently understand and follow the study protocol 8. Has an irregular sleeping pattern (e.g. due to undertaking night-shift work) 9. Any other condition, concurrent intervention or behaviour deemed either to pose undue personal risk to the participant or to introduce bias into the experiment

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Conditions

The condition(s) this trial relates to.

Fasting

As listed by the trial registrant

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

Glucose and lipid metabolism

Contacts and locations

Locations

  • University of Bath

    Bath, BA2 7AY, United Kingdom

More trials for these conditions

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