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Periods and insulin: study reveals hidden link in diabetes control

NCT ID NCT07004504

Knowledge-focused Sponsor: DCB Research AG Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study examined how the menstrual cycle affects blood sugar and insulin needs in 77 women with type 1 diabetes. Using data from continuous glucose monitors and insulin pumps, researchers compared the follicular and luteal phases. The goal is to help women adjust their diabetes management based on their cycle.

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 study could help women with type 1 diabetes better manage their blood sugar by adjusting insulin doses based on their menstrual cycle phase.
What could go wrong
This is an observational study that only looks at existing data, so it cannot prove cause and effect. The results may not apply to all women with type 1 diabetes.

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.

Participants

77 people

The number who actually took part.

Started

Dec 2023

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.

Who is studied

This study includes adults (18+) living with type 1 diabetes (T1D) who use a continuous glucose monitoring (CGM) system and either an insulin pump or a smart pen for insulin delivery. Participants must be willing to upload diabetes-related data to the Tidepool Data Platform, track and share their menstrual cycle data, and provide consent for their anonymized data to be used in research.

Ages

18 years and older

Sex

Female participants only

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 People are eligible to participate in the study if they: * are living with T1D; * are willing to upload diabetes-related data to the Tidepool Data Platform; * are using a continuous glucose monitoring (CGM) system; * are using an insulin pump or a smart pen for most of their insulin delivery; * are willing to track and share their menstrual cycle data; * are 18 years old or older; * give consent to share their anonymized data for research.

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Conditions

The condition(s) this trial relates to.

Insulin Resistance 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

Contacts and locations

Locations

  • DCB Research AG

    Bern, 3010, Switzerland

More trials for these conditions

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