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Scientists probe Gut-Hormone link in Women's aging

NCT ID NCT07614542

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

The AGEWISE study is observing 300 healthy women aged 40 to 64 in Portugal to understand how gut bacteria change with hormones during menopause. Participants provide stool and blood samples and answer health and diet questionnaires. Researchers hope to uncover connections between the gut microbiome, hormone levels, and inflammation to improve future prevention strategies for women's aging.

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 point toward new prevention strategies for age-related health issues in women by linking gut health to hormonal changes.
What could go wrong
This is an observational study, so it cannot prove cause and effect. Results may not apply to women outside Portugal or those with health conditions.

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 300 people

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

Started

Jun 2025

Expected to finish

Dec 2036

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

Participants are recruited using non-random, voluntary recruitment strategies. Eligible women are identified through open public calls, institutional outreach activities, existing biobank donor databases, and re-contact of participants from related research projects who have previously agreed to be contacted for future studies. Enrollment is based on predefined eligibility criteria and the individual's willingness to participate. All potential participants who meet the eligibility criteria receive detailed information about the study from the research team, and those who agree to take part are required to provide written informed consent prior to participation.

Ages

40 to 64 years

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: * Female sex * Aged 40 to 64 years * Resident in mainland Portugal or the islands * Able and willing to provide written informed consent * Willing to provide stool and blood samples and complete three questionnaires Exclusion Criteria: * Age below 40 years or 65 years and older * Inability to give informed consent * Refusal to provide stool or blood samples or complete questionnaires * Pregnancy * Diagnosed gastrointestinal disorders (including inflammatory bowel disease, Crohn's disease, ulcerative colitis, irritable bowel syndrome, chronic diarrhoea of unknown cause, or recurrent Clostridioides difficile infection) * Active oncological disease

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As listed by the trial registrant

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

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

  • Gulbenkian Institute for Molecular Medicine, Lisbon

    RECRUITING

    Lisbon, Portugal

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