A handful of peanuts a day: could it sharpen teen brains?
NCT ID NCT06127511
First seen Sep 04, 2026 · Last updated Sep 04, 2026
Summary
Researchers in Barcelona are testing whether eating 25 grams of roasted peanuts daily for six months can improve cognitive performance, mood, and weight management in healthy adolescents aged 10 to 12. Half of the participants will eat the peanut snack, while the other half will not. Both groups will also receive education on healthy eating, exercise, sleep, and emotions. The study measures attention, memory, depression scores, and various health biomarkers to see if peanuts make 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
- whole skin roasted peanuts as a daily snack
- What this could lead to
- If it works, a simple daily peanut snack could become a practical way to support brain function, mood, and healthy weight in adolescents.
- What could go wrong
- This is an early-stage trial with a modest number of participants, so results may not apply broadly. Peanuts are safe for most, but those with allergies cannot participate.
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
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142 people
The number who actually took part.
- Started
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Jan 2024
- Finished
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Dec 2025
- 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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10 to 12 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: Eligible participants will be young adolescents, boys and girls, aged between 10 and 12 years who attend regular primary schools in Barcelona. The schools will assist with the participant recruitment through the classes and after that, a total of one-hundred students will be randomly included in each group. In all cases, participation will be voluntary and informed consent will be obtained prior to the study. Exclusion Criteria: The exclusion criteria will be history of allergy or intolerance to peanuts, any medical conditions or dietary restrictions that would affect peanut consumption, being able to understand Spanish or Catalan, and use of antibiotics in the month prior to 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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IDIBAPS
Barcelona, Barcelona, 08036, Spain
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