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Could hot and cold weather mess with your insulin?

NCT ID NCT07491133

Knowledge-focused Sponsor: Institut de Recherches Cliniques de Montreal 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how different temperatures—cold, normal, and hot—affect blood sugar levels and insulin absorption in adults with type 1 diabetes. Thirty participants will sit in a special room at each temperature for two hours while researchers monitor their blood sugar, heart rate, and insulin levels. The goal is to understand if people with type 1 diabetes need special advice for managing their blood sugar during extreme weather.

What this could mean

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

Active substance
Environmental temperature exposure (cold, neutral, hot/humid)
What this could lead to
If successful, this study could provide guidance for people with type 1 diabetes on managing blood sugar during extreme weather.
What could go wrong
This is a small, early-stage study with only 30 participants, so results may not apply to everyone. It is designed to gather knowledge, not to test a new treatment.

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 30 people

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

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Jul 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 45 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Diagnosis of type 1 diabetes for more than 2 years * Ability to provide verbal and written informed consent * Ability to speak and understand French Exclusion Criteria: * Recent and/or unstable health condition (less than 3 months) prior to enrolment * Any viral infection at time of participation * Chronic illness other than type 1 diabetes (for example: pulmonary disease, cardiovascular disease, cancer) * Health condition not controlled by medication * Pregnancy or breastfeeding (for female participants) * Any other health condition deemed to pose undue health risks during participation in the study

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Conditions

The condition(s) this trial relates to.

hypoglycemia type 1 diabetes mellitus

As listed by the trial registrant

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

Type 1 diabetes mellitus

How to take part

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

  1. The places running it

    1 site. 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

  • Institut de recherches cliniques de Montréal

    Montreal, Quebec, H2W 1R7, Canada

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