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Olive you healthy: daily olives may boost cholesterol in young adults

NCT ID NCT05218980

Disease control Sponsor: Yale University 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 whether eating six olives every day for five weeks can improve cholesterol and other health markers in healthy young adults. Researchers will compare blood tests from 226 Yale college students before and after the olive-eating period. The goal is to see if this simple dietary change can help maintain heart health early in life.

What this could mean

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

Active substance
Organic table olives
What this could lead to
If it works, this could show that adding olives to a daily diet helps maintain healthy cholesterol levels in young adults.
What could go wrong
This is a small, early-stage study in healthy college students, so results may not apply to the general population. The intervention is only 5 weeks long, so long-term benefits are unknown.

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 226 people

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

Expected to start

Jan 2027

An estimate. Start dates often move.

Expected to finish

Jun 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

18 to 23 years

Sex

Anyone

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: * Yale College Freshman, Sophomore, or Junior * Ability and desire to sign informed consent * Stated willingness to comply with all study procedures and availability for the duration of the study * Male or female, age 18 on the day of consent * Ability and desire to consume 6 olives daily Exclusion Criteria: * Yale College Senior * Unable to provide informed consent form * Self-reported pregnancy * Unwillingness to comply with all study procedures and/or be available for the duration of the study * Inability and desire to consistently consume 6 olives per day * Inability to consume fruit with pits * Current and consistent use of \> 6 olives per day * Current and consistent use of ≥ 1 tablespoon of extra virgin olive oil (EVOO) per day * Known allergic reactions to olives and/or their derivatives * Known reactions to blood draw

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As listed by the trial registrant

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

Cholesterol Healthy diet Healthy lifestyle Healthy nutrition

How to take part

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  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

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Contacts and locations

Locations

  • Yale University

    New Haven, Connecticut, 06520, United States

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