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Your period vs. your zip code: new study investigates

NCT ID NCT07037082

Knowledge-focused Sponsor: University Hospital, Montpellier 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how where you live and your financial situation affect your menstrual cycle. Researchers will track hormones, body temperature, and daily symptoms in 320 women from different backgrounds in southern France. The goal is to understand how factors like pollution and stress impact reproductive health.

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

About 320 people

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

Started

Sep 2025

Expected to finish

Jul 2029

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.

Who is studied

Women were initially recruted from medical and paramedical practices, hospitals, clinics, pharmacies and medical advisors from the different environments studied in Occitanie, then in a second time via social networks (Facebook and Snapchat) and local newspapers (e.g. Midi Libre) in the event of recruitment difficulties.

Ages

18 to 39 years

Sex

Female 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: * Woman of childbearing age (18-39 years) * Woman not using hormonal contraception for at least 6 months * Woman with semi-regular menstrual cycles between 21 and 45 days inclusive * Woman with no known history of infertility * Woman working in the same environment (urban/rural) as her place of residence * Knowledge of the dates of periods over the last 3 cycles * Woman who has a freezer at -20°C Exclusion Criteria: * Diagnosis by a physician of one or more of the following comorbidities: Polycystic ovarian syndrome (PCOS), Endometriosis, Adenomyosis, Diabetes or thyroid disease, Hormone-dependent gynecological cancers (breast, endometrium, ovaries), Coagulation diseases (von Willebrand), Chronic liver failure, chronic renal failure, heart disease, autoimmune disease, Autism, Diagnosis and/or treatment for a psychiatric illness * Chronic exposure to cocaine, amphetamine/methamphetamine, morphine or ecstasy within 30 days prior to inclusion * Chronic exposure to THC within 7 days prior to inclusion. * Person who is not comfortable with self-sampling (hematophobia or other) * No access to a smartphone * No possibility of wearing a connected ring for at least 60 days 22h/24h * Pregnant or breastfeeding woman * Woman who gave birth or breastfed in the 2 months before the study * Person who moved less than 2 years before the study (does not concern participants who moved in the same environment (rural or urban, less than 20 km) * Person unable to read French * Failure to obtain informed consent * Person not benefiting from a national health insurance scheme * Person under legal protection, guardianship or curatorship * Person participating in other research involving the human person

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Conditions

The condition(s) this trial relates to.

Inflammation

As listed by the trial registrant

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

Socioeconomic factors Woman of reproductive age

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

  • Institute of Evolutionary Science of Montpellier

    RECRUITING

    Montpellier, 34090, France

More trials for these conditions

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