Can olive oil and walnuts shield the brain from stroke and memory loss?
NCT ID NCT06933212
First seen Sep 01, 2026 · Last updated Sep 02, 2026 · Updated 1 time
Summary
This trial tests whether a Mediterranean diet, enriched with extra virgin olive oil or walnuts, can lower the chance of stroke and slow cognitive decline in people with cerebral amyloid angiopathy (CAA) or CADASIL, two conditions that affect blood vessels in the brain. Participants will follow either a Mediterranean diet with olive oil, a Mediterranean diet with walnuts, or a low-fat control diet. Researchers will track stroke incidence and cognitive function over time to see if the diet makes a difference.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Mediterranean Diet enriched with extra virgin olive oil or walnuts, compared to a low-fat control diet
- What this could lead to
- If it works, this could point toward a dietary approach to lower stroke risk and slow cognitive decline in people with CAA and CADASIL.
- What could go wrong
- This is a small, early-stage trial, and dietary changes may not be enough to alter disease course. Results may not apply to all 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.
- Participants
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About 86 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Oct 2024
- Expected to finish
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Jul 2027
An estimate. End dates often move.
- 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.
Who is studied
All patients diagnosed with CADASIL and CAA who are referred to the outpatient clinics and hospital department of the Complex Structure "Neurology 9 - Cerebrovascular Diseases" at the Fondazione IRCCS Istituto Neurologico "Carlo Besta" in Milan will be enrolled in the study. All patients will be asked to provide their consent to participate in the study by signing a specific form that includes consent for the collection of demographic, clinical, and nutritional data.
- Ages
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18 years and older
- 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: * The study will include individuals of both sexes aged 18 years or older with a diagnosis of CADASIL (confirmed genetically by the presence of the NOTCH3 gene mutation) or possible/probable CAA (defined according to the Boston 2.0 criteria). All participants must provide informed consent for the use of demographic, clinical, and nutritional data for scientific purposes in an anonymous form Exclusion Criteria: * na
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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.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Fondazione IRCCS Istituto Neurologico Carlo Besta
RECRUITINGMilan, Italy
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