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Massive 30-Year Women's health study reveals hidden disease links

NCT ID NCT03285230

Knowledge-focused Sponsor: Institut National de la Santé Et de la Recherche Médicale, France 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 long-running study follows nearly 100,000 French women, mostly teachers, since 1990 to understand what factors influence their risk of cancer, heart disease, diabetes, and other major illnesses. Participants fill out questionnaires every few years about their lifestyle, medical history, and health changes. Researchers also collected blood and saliva samples from many participants to study biological markers. The goal is to uncover patterns that could help prevent disease in women as they age.

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 identify lifestyle and medical factors that raise or lower the risk of major diseases in women.
What could go wrong
This is an observational study, not a treatment trial, so it cannot prove cause and effect. Results may take years to influence medical practice.

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

100,000 people

The number who actually took part.

Started

Jun 1990

Expected to finish

Dec 2046

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

The cohort comprised nearly 100 000 women with baseline ages ranging from 40 to 65 years, all insured through a French national health system (MGEN).

Ages

40 years and older

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: * only women * born between 1925 and 1950 * insured by the Mutuelle Générale de l'Education Nationale (MGEN) Exclusion Criteria: \- men

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Conditions

The condition(s) this trial relates to.

asthma breast cancer breast neoplasm cardiovascular disorder colonic neoplasm colorectal cancer Crohn disease Depression depressive disorder diabetes mellitus endometrial cancer endometriosis endometrium neoplasm hypertensive disorder inflammatory bowel disease melanoma Parkinson disease thyroid cancer Thyroid Neoplasms

As listed by the trial registrant

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

Asthma Breast cancer Cardiovascular diseases Colo-rectal cancer Crohn disease Depression Diabetes Endometrial cancer Endometriosis Hypertension Inflammatory bowel diseases Melanoma Parkinson disease Thyroid cancer

Contacts and locations

Locations

  • Study site

    Villejuif, 94800, France

More trials for these conditions

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