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Krill oil supplement may boost muscle in middle age, small study hints

NCT ID NCT06005064

Disease control Sponsor: University of Glasgow 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study tested whether taking krill oil supplements for six months could improve muscle strength and mass in adults aged 35 to 60. Fifty-four participants took either krill oil or a vegetable oil placebo. The researchers measured changes in leg strength, grip strength, and body composition to see if the supplement helps fight age-related muscle loss.

What this could mean

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

Active substance
krill oil
What this could lead to
If it works, this could point toward a simple supplement to help maintain muscle strength and mass in middle-aged adults, potentially reducing the risk of sarcopenia.
What could go wrong
This is a small, completed trial with only 54 participants. The results may not apply to everyone, and supplements like krill oil often show modest effects that don't translate into real-world benefits.

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

54 people

The number who actually took part.

Started

Nov 2023

Finished

Oct 2025

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

35 to 60 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: * Be 35-60 years old * Have a BMI of less than 35kg/m2 Exclusion Criteria: * People with diabetes, severe cardiovascular disease, seizure disorders, uncontrolled hypertension (\>150/90mmHg at baseline measurement), cancer or cancer that has been in remission \<5 years, ambulatory impairments which would limit the ability to perform assessments of muscle function, dementia, on anticoagulant therapy, and/or taking medication known to affect muscle (e.g., steroids). * People who have allergies to seafood, and/or regular consumption of more than 1 portion of oily fish per week. * People who perform regular (\>1 day/week) resistance exercise training.

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Conditions

The condition(s) this trial relates to.

Sarcopenia

As listed by the trial registrant

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

Sarcopenia

Contacts and locations

Locations

  • University of Glasgow

    Glasgow, United Kingdom

More trials for these conditions

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