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Avocado a day may keep cellular aging at bay for breast cancer survivors

NCT ID NCT07097155

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tests whether eating one avocado daily for 4 months can slow biological aging in 120 female breast cancer survivors. The researchers will measure changes in telomere length (a marker of cellular aging) and other health indicators like inflammation and heart disease risk. Participants will either eat an avocado each day or follow their usual diet with fewer than two avocados per week.

What this could mean

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

Active substance
avocado
What this could lead to
If it works, this could point toward a simple dietary change to help breast cancer survivors age more slowly and reduce long-term health risks.
What could go wrong
This is a small, early-phase trial (120 people) testing a biomarker, not a direct health outcome. Results may not lead to a proven treatment or apply to everyone.

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 120 people

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

Started

Jan 2026

Expected to finish

Aug 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

40 to 65 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: * Women diagnosed with primary breast cancer in stages I, II or III; * 40-65 years old at screening; * Cancer treatment (radiotherapy and chemotherapy) completed ≥ 6 months but not more than 10 years at the time of recruitment; * Currently consuming less than 2 avocados per week; * Signed the informed consent letter. Exclusion Criteria: * Metastasis; * Ductal carcinoma or lobular carcinoma in situ; * Breast cancer recurrence; * Cancer diagnosis other than breast cancer or non-melanoma skin cancer; * Body mass index ≥40kg/m2; * Currently pregnant or breastfeeding, or planning pregnancy in the following 6 months; * Allergy to latex; * Unwilling to consume avocado; * Immunodeficiency or HIV-positive status; * Alcohol abuse (\>50g/day); * Unstable use of plant sterols, mineral supplements, use of fibre supplements, fish oil, or antioxidants in the 4 weeks prior to enrolment, or plans to change this during the study; * Currently participating in any other randomized controlled trial; * Difficulty or impossibility of an adequate follow-up; * Inability or unwillingness to give written informed consent or to communicate with study personnel, or illiteracy; * Patients with an acute infection or inflammation (e.g., pneumonia) will be allowed to participate in the study 3 months after recovery.

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Conditions

The condition(s) this trial relates to.

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

  • Unit for Public Health and Nutritional Epidemiology, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili

    RECRUITING

    Reus, Tarragona, 43201, Spain

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