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Could kidney patients eat more fruits and veggies safely?

NCT ID NCT07494266

Disease control Sponsor: Karolinska Institutet 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 06, 2026 · Updated 2 times

Summary

This pilot study will test whether a healthy plant-based diet without strict potassium limits is safe for people with advanced chronic kidney disease (stages 4-5). Thirty participants will be assigned to either a liberal plant-based diet or a traditional potassium-restricted diet for six months. The main goal is to see if the liberal diet leads to dangerous high potassium levels. If safe, it could improve quality of life and lead to larger studies.

What this could mean

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

Active substance
healthy plant-based diet (liberal potassium intake)
What this could lead to
If successful, this could show that a more varied plant-based diet is safe for kidney patients, potentially improving quality of life and paving the way for larger studies.
What could go wrong
This is a small pilot study (30 people) that hasn't started yet. It only tests safety over 6 months, so long-term benefits or risks are unknown. The liberal diet might still cause dangerous potassium spikes in some patients.

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 30 people

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

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Jun 2030

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

20 to 85 years

Sex

Anyone

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 * Age between 20 and 85 years * Chronic kidney disease (CKD) with an estimated glomerular filtration rate (eGFR) \<30 mL/min/1.73 m² * Normal potassium levels (plasma potassium 3.5-5.3 mmol/L) * Not on dialysis * Good knowledge of Swedish Exclusion Criteria * Pregnancy * Breastfeeding * Kidney transplant * Regular use of potassium binders at least 4 days/week (e.g. sodium zirconium cyclosilicate, patiromer or sodium polystyrene sulfonate) * Regular prescription of daily potassium salts (e.g. potassium chloride) * Planned kidney transplant * Planned start of dialysis within the next 6 months * Allergy to nuts (including peanuts) * Mental illness and cognitive impairment that impede understanding of dietary advice * Comorbidities that may affect potassium balance (e.g. adrenal insufficiency, inflammatory bowel disease, chronic diarrhoea or colostomy)

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Conditions

The condition(s) this trial relates to.

chronic kidney disease chronic renal failure syndrome end stage renal failure Hyperkalemia

As listed by the trial registrant

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

Chronic kidney disease (stages 4 and 5) Hyperkalemia

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

  • Karolinska Institute

    Huddinge, Stockholm Län, 14152, Sweden

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