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Can a sleepless night rewire hunger and memory?

NCT ID NCT01823263

Knowledge-focused Sponsor: Uppsala University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 12, 2026 · Last updated Aug 13, 2026 · Updated 1 time

Summary

This study investigates whether partial sleep deprivation, compared with normal sleep, changes metabolic and cognitive functions related to food intake, hunger, and memory. Healthy young men aged 20-28 will undergo both sleep conditions in a controlled setting, with blood samples and memory tasks measuring outcomes. The goal is to understand how even modest sleep loss might influence eating behavior and cognitive performance.

What this could mean

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

Active substance
Partial sleep deprivation
What this could lead to
If it works, this could clarify how even partial sleep loss alters hunger and memory, pointing toward strategies to mitigate those effects.
What could go wrong
This is a small, early-stage study in healthy young men, so findings may not apply broadly. It does not test a treatment, only short-term effects.

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

18 people

The number who actually took part.

Started

Apr 2013

Finished

Sep 2014

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

20 to 28 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 * Age 20-28y * Healthy (self-reported) and not on medication * Non-smoking * Normal sleep-wake rhythm (i.e. 7-8 h per night, self-reported and verified by sleep diaries) * Normal dietary habits (regular meal pattern with daily breakfast) Exclusion Criteria: * Major illness * Taking any serious medications * Any sleep conditions (e.g. irregular bedtimes, sleep complaints) * Any dietary issues with the food items provided * A history of endocrine, neurological or psychiatric disorders * Shift work in the previous 3 months * Travel over several time zones within the previous two months

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Conditions

The condition(s) this trial relates to.

Sleep Deprivation sleep disorder

As listed by the trial registrant

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

Sleep Sleep deprivation

Contacts and locations

Locations

  • Department of Neuroscience, Uppsala University

    Uppsala, Uppsala County, 75105, Sweden

More trials for these conditions

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