Scientists hunt for biological clues to your dinner plate.
NCT ID NCT07128940
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
The BARITONE study aims to find biological markers in blood and urine that show what people actually eat—like meat, fish, or vegetarian meals. One hundred healthy adults will eat three different diets for a week each, with a break in between. The goal is to improve how researchers measure diet in future health studies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could help researchers develop simple tests to measure what people actually eat, improving studies on diet and disease risk.
- What could go wrong
- This is a small, early-stage observational study, not a treatment trial. The biomarkers found may not be reliable enough for real-world use.
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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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100 people
The number who actually took part.
- Started
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Sep 2025
- Finished
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Mar 2026
- 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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18 to 65 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: * Healthy adult * 18-65 years * BMI 18.5-30 kg/m² * Willing to consume the three diets i.e. meat, fish, and vegetarian * Understands Swedish * Low intake of vegetables, fruit and berries (lowest tertile of screened participants, estimated \<100g day) or high intake of vegetables, fruit and berries (highest tertile of screened participants, estimated \>400g day) Exclusion Criteria: * Pregnancy and lactation * Diagnosis of cancer or other life threatening diseases * Diagnosis of metabolic or food related diseases inluding diabetes, inflammatory bowel disease, hypothyroidism or celiak disease. * Medication that influences the metabolism such as blood lipid lowering medication, insulin, etc. * Use of drugs other than medication and alcohol * Nicotine use (snuff, vaping and smoking)
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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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University of Gothenburg
Gothenburg, 405 30, Sweden
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