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Milk vs. water: surprising findings on Kids' hydration and brainpower

NCT ID NCT06711926

Knowledge-focused Sponsor: Northumbria 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This completed study tested how three different drinks—water, semi-skimmed milk, and whey permeate—affect hydration, thinking skills, and mood in 13 healthy children aged 9 to 11. Each child tried all three drinks on separate mornings, and researchers measured urine output, blood and breath samples, and cognitive performance. The goal was to find which drink keeps kids hydrated best and whether that helps them learn and feel better in school.

What this could mean

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

Active substance
Distilled water, semi-skimmed milk, and whey permeate (all strawberry-flavored)
What this could lead to
If successful, this could help identify the best drink for keeping kids hydrated and supporting their learning at school.
What could go wrong
This was a very small study (13 children) and only looked at short-term effects. Results may not apply to all children or real-world school settings.

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

13 people

The number who actually took part.

Started

Nov 2024

Finished

Dec 2024

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

9 to 11 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 9-11 * Healthy Exclusion Criteria: * Psychiatric, neurological or mental disorder. * Children with any morbidity that might influence hydration status (i.e., renal/cardiovascular/metabolic disease), blood-borne illness, or if they were taking any medications that may impact fluid balance. * Children that are lactose intolerant * Children that have any food allergies

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As listed by the trial registrant

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

Beverage hydration index Dehydration in children THIRST

Contacts and locations

Locations

  • Northumbria University

    Newcastle upon Tyne, United Kingdom

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