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Can science predict who will get sick in a heatwave?

NCT ID NCT07510061

Knowledge-focused Sponsor: University of Thessaly Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at why some people get sick from heat and sun exposure while others don't. Researchers will monitor 80 healthy volunteers in Denmark and Greece as they undergo controlled heat and UV radiation in a lab. The goal is to develop personalized alerts and advice to help people stay safe during heatwaves.

What this could mean

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

What this could lead to
If successful, this could lead to personalized alerts and advice to help people avoid heat-related illness during heatwaves.
What could go wrong
This is an observational study, not a treatment trial. It may not produce actionable results, and findings may not apply to everyone.

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

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Started

Nov 2025

Expected to finish

Apr 2027

An estimate. End dates often move.

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 65 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.

Study Population Healthy adult volunteers residing in Denmark (Northern Europe) or Greece (Southern Europe). Inclusion Criteria * Age 18-65 years (or your protocol-specific age range) * Healthy as determined by medical history screening questionnaire * Able to provide written informed consent * Able to complete heat exposure and light exercise protocol * No heat acclimatization or extensive sun exposure in the previous 4 weeks * Fitzpatrick skin type I-IV (if applicable for UV testing) * Willing to undergo blood sampling, urine collection, and skin biopsy Exclusion Criteria * History of cardiovascular, metabolic, neurological, or dermatological disease * History of heat-related illness (e.g., heat stroke) * Use of medications affecting thermoregulation or cardiovascular function * Smoking or substance abuse * Pregnancy or breastfeeding * Abnormal ECG or uncontrolled hypertension * Recent severe sunburn or UV treatment * Contraindications to skin biopsy * Inability to tolerate heat exposure during screening

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Conditions

The condition(s) this trial relates to.

Cognitive Dysfunction Heat Stress Disorders Hyperthermia skin cancer skin neoplasm UV-induced skin damage, susceptibility to

As listed by the trial registrant

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

Heat stress Heat tolerance Heat-related illness Hyperthermia Skin cancer Ultraviolet radiation-related skin damage

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites in 2 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Department of Physical Education and Sport Science

    RECRUITING

    Trikala, Thessaly, 42100, Greece

  • Københavns Universitet

    RECRUITING

    Copenhagen, 2100, Denmark

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