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Shift workers test eating only during daytime to control blood sugar

NCT ID NCT06686667

Knowledge-focused Sponsor: Woolcock Institute of Medical Research Source: ClinicalTrials.gov ↗

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether rotating shift workers can stick to a time-restricted eating plan, where they only eat during certain hours. Researchers wanted to see if this approach is practical and how it affects blood glucose levels during day and night shifts. 31 healthcare workers took part in the trial.

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

31 people

The number who actually took part.

Started

Mar 2025

Finished

Sep 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

23 to 60 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: * Healthcare professionals engaged in rotating shift work, including night shifts; * Aged 23-60 years; * At least 12 months experience in shift work; * Willing to wear continuous glucose monitor sensors; * Willing to engage in time restricted eating. Exclusion Criteria: * Diagnosis of diabetes (Type 1 or 2), any bariatric surgery, coeliac disease, inflammatory bowel disease, endocrine disorders affecting glucose metabolism, current or history of eating disorder, any liver, kidney, or coronary heart disease, obese (BMI\>35) or underweight (BMI\< 18) or any severe or unstable chronic medical conditions or cancers; * Currently taking medications known to interact with glucose metabolism, i.e. thyroxin, insulin sensitizers, glucocorticoids, or anti-depressants, weight loss medication; * Undertaking current structured or restrictive dietary plan; * Shift workers who routinely do not eat between 23:00 and 06:00 hours during night shift; * Current or planned pregnancy or currently breast feeding; * Consume three or more standard alcohol containing beverages on a single occasion almost every day; * People who identify as having significant caffeine dependency and are unwilling to limit intake of calorie free energy drinks; * People with planned travel over time zones during the study period * Any contraindication to use of Abott FreeStyle Libre Pro glucose sensor (eg prescription of vitamin C, Salicylic acid or paracetamol - to be reviewed by study clinician).

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Conditions

The condition(s) this trial relates to.

circadian rhythm sleep disorder, shift work type Feeding Behavior Intermittent Fasting

As listed by the trial registrant

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

Eating behaviors Shift work

Contacts and locations

Locations

  • The Sutherland Hospital

    Caringbah, New South Wales, 2229, Australia

More trials for these conditions

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