Can plant sterols and krill oil tame inherited high cholesterol?
NCT ID NCT05695937
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This pilot study tested whether adding plant sterols (phytosterols) and/or krill oil to a heart-healthy Brazilian diet can lower cholesterol in people with familial hypercholesterolemia (FH), an inherited condition causing very high cholesterol. Fifty-eight adults with FH were randomly assigned to one of four groups: diet alone, diet plus phytosterols, diet plus krill oil, or diet plus both supplements. The study measured changes in LDL cholesterol and lipoprotein(a) after 120 days, along with adherence and side effects, to inform a larger future trial.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- phytosterols and krill oil (dietary supplements)
- What this could lead to
- If it works, this could point toward a way to better manage high cholesterol in people with familial hypercholesterolemia using diet and supplements.
- What could go wrong
- This is a small pilot study (58 people) with no phase, so results are preliminary. The supplements may not significantly lower cholesterol, and the diet may be hard to stick with long-term.
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
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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
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58 people
The number who actually took part.
- Started
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May 2023
- Finished
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Jul 2024
- Lead sponsor
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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
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20 to 80 years
- Sex
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Anyone
- Healthy volunteers
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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 Hide 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: * Adult participants (age ≥20 years); * Definitive (certainty) or probable diagnosis of FH by the Dutch MEDPED criteria; * Using one of the following treatment regimens for ≥ 6 weeks: simvastatin 40 mg; lovastatin 40 mg; pravastatin 80 mg; atorvastatin 20 mg; rosuvastatin 10 mg; pitavastatin 4 mg; fluvastatin 80 mg; atorvastatin 40 - 80 mg; rosuvastatin 20 - 40 mg; atorvastatin 40 - 80 mg + ezetimibe 10mg; rosuvastatin 20 - 40 mg + ezetimibe 10mg; or simvastatin 40mg + ezetimibe 10mg. Exclusion Criteria: * "Possible" diagnosis of FH according to the Dutch MEDPED criteria; * Fasting triglycerides ≥ 500mg/dL; * Diagnosis of hypercholesterolemia due to a secondary cause (hypothyroidism, nephrotic syndrome, etc.); * Food allergies (food, dyes, preservatives); * Contraindication to the use of phytosterols (for example: diagnosis of sitosterolemia); * HIV positive in treatment/AIDS; * Chronic inflammatory diseases; * Liver disease or chronic kidney disease on dialysis; * Cancer under treatment or life expectancy \< 6 months; * Episode of acute coronary syndrome in the last 60 days; * Chemical dependency/alcoholism; * Chronic use of anti-inflammatory, anticonvulsant and immunosuppressive drugs; * Use of PCSK9 inhibitors (alirocumab and evolocumab); * Pregnancy or lactation; * Wheelchair users unable to undergo anthropometric assessment; * Body mass index ≥40kg/m²; * Use of dietary supplements that may interfere with the outcomes of interest; * Participation in other randomized clinical trials; * Refusal to participate in the study.
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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.
Contacts and locations
Locations
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Hcor
São Paulo, Brazil
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Hospital Ana Nery
Salvador, Brazil
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Hospital São José
Criciúma, Brazil
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Hospital das Clínicas da Universidade Federal de Goiás
Goiânia, Brazil
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InCor
São Paulo, Brazil
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Instituto Dante Pazzanese de Cardiologia
São Paulo, Brazil
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Instituto Nacional de Cardiologia
Rio de Janeiro, Brazil
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Universidade Feevale
São Leopoldo, Brazil
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Universidade Regional do Noroeste do Estado do Rio Grande do Sul
Ijuí, Brazil
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