Pilot Study of "Bottarga" Supplementation: A Little-known, Sustainable "Blue" Food
ID: NCT06988462
Our intelligence engine has synthesized this trial record to answer your most important questions in clear, simple terms:
This pilot study aims to explore the potential benefits of consuming Greek bottarga (grey mullet fish roe) in individuals with at least one metabolic abnormality (low HDL cholesterol, high LDL cholesterol, high triglycerides, obesity, or HbA1c ≥ 5.7%) or a diagnosis of diabetes. Before initiating the crossover randomized controlled trial (RCT), the investigators will conduct a preliminary dose-testing study in five adults with at least one metabolic abnormality. Participants will undergo clinical assessments before and after the dietary intervention to evaluate changes in metabolic health markers. Following this phase, the investigators will proceed with a randomized, controlled crossover trial involving 20 eligible adult participants. This main study phase will compare the metabolic effects of daily bottarga supplementation with those of a calorically matched dairy product over an 8-week intervention period, with a 2-week washout period between interventions. The investigators anticipate that bottarga supplementation will improve lipid profiles, inflammation markers, and insulin resistance, thereby supporting the potential use of sustainable blue foods as part of a healthy diet.
Read Full Scientific Objectives & Methods
Rationale/goals: Greek Bottarga (Grey mullet fish roe) is a traditional marine or "blue" food "that is produced in a sustainable manner. Bottarga's composition supports that it has excellent nutritional properties, but to date no human/clinical studies have been published. This pilot study will explore the potential benefits of Bottarga consumption in humans. If the results show potential benefits, this would help promote more sustainable blue foods. Methods: Before initiating the crossover randomized controlled trial (RCT), the investigators will conduct a preliminary dose-testing study in five adults with at least one metabolic abnormality, who will consume 20 g/day of Bottarga. Participants will undergo clinical assessments before and after the dietary intervention to evaluate changes in metabolic health markers. The current randomized, controlled, cross-over pilot study (Open Label, Two-Arms) will investigate the metabolic effects of daily bottarga supplementation (versus a calorically equal dairy product) in 20 participants with at least one metabolic abnormality for 8 weeks with a 2-week "washout" period between food supplement arms. The primary outcome will be determined based on the most clinically important results observed during phase 1. Anticipated Results: The investigators expect Bottarga supplementation to be associated with more beneficial changes on lipid profiles, inflammatory markers and insulin resistance compared to baseline measures and to the calorically equivalent comparator food.
Participants will consume prepackaged daily doses of Bottarga, each containing the required amount (20 grams/day; participants weighing \>100 kg \[220 lbs\] will consume 40 g/day) for 8 weeks.
Participants will consume 28g of cream cheese/day (participants weighing \>100 kg \[220 lbs\] will consume 56 g/day) for 8 weeks.
Treatment Arms Description
Ten participants with at least one metabolic abnormality (low HDL cholesterol, high LDL cholesterol, high triglycerides, obesity, or HbA1c ≥ 5.7%) or a diagnosis of diabetes will be randomly allocated to 8 weeks of daily bottarga supplementation (20 grams/day; participants weighing \>100 kg \[220 lbs\] will consume 40 g/day) as an initial treatment. Baseline assessment measures will be repeated, followed by a 2-week wash-out period. Then, assessment measures will be repeated followed by 8 weeks of daily cream cheese supplementation (28 grams/day; participants weighing \>100 kg \[220 lbs\] will consume 56 g/day), followed by final assessment measures.
Ten participants with at least one metabolic abnormality (low HDL cholesterol, high LDL cholesterol, high triglycerides, obesity, or HbA1c ≥ 5.7%) or a diagnosis of diabetes will be randomly allocated to 8 weeks of daily cream cheese supplementation (28 g/day) as the initial intervention. Baseline assessment measures will be repeated, followed by a 2-week wash-out period. Then, assessment measures will be repeated, followed by 8 weeks of daily Bottarga supplementation (20 g/day;participants weighing \>100 kg \[220 lbs\] will consume 40 g/day), followed by final assessment measures.
- Use of any medications for diabetes (except metformin), dyslipidemia (except statins), or immunosuppression
- Current use of any supplements containing n-3 fatty acids
- Current use of illicit drugs (other than marijuana)
- Use of hormone therapy (except oral contraceptives)
- Known allergies to fish, seafood, or any fish-derived products, including bottarga
- Pregnancy
- Clinical evidence or history of hepatic or renal insufficiency
- Immunodeficiency conditions
- History of non-skin cancer
- Participation in other clinical research studies
Primary Outcome Measures
- Mean change in fasting glucose — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Mean change in fasting glucose levels (mg/dL) after overnight fast.
- Mean Change in High-Sensitivity C-Reactive Protein (hs-CRP) — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Mean change in serum hs-CRP levels (mg/L) after overnight fast.
- Mean Change in Hemoglobin A1c (HbA1c) — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Mean change in HbA1c levels (%) after overnight fast.
- Mean Change in Lipid Profile (Total Cholesterol, Triglycerides, HDL-C, LDL-C) — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Mean change in fasting lipid levels-including total cholesterol (mg/dL), triglycerides (mg/dL), high-density lipoprotein cholesterol (HDL-C, mg/dL), and low-density lipoprotein cholesterol (LDL-C, mg/dL after overnight fast.
View Secondary Outcome Measures (6)
- Mean change in body mass index — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Body Mass Index (kg/m-squared)
- Mean change in body fat — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Body fat percentage as measured by bioelectrical impedance
- Mean change in waist circumference — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Waist circumference (cm)
- Mean change in waist/hip ratio — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Waist/hip ratio (waist circumference (cm) divided by hip circumference (cm)
- Mean change in resting blood pressure — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Resting systolic and diastolic blood pressure (mmHg), measured using calibrated automated sphygmomanometers.
- Mean change in liver enzymes — Time Frame: From baseline (start of the intervention) to Week 8 (end of the initial intervention period, prior to crossover), and from Week 10 to Week 18 (end of the second intervention period following crossover).
Aspartate aminotransferase (AST, U/L), Alanine aminotransferase (ALT, U/L), Alkaline phosphatase (ALP, U/L) after overnight fast.
This trial is recruiting at 1 study facilities worldwide. Click below to see if there is a clinic or hospital in your area:
Show All 1 Facilities & Contact Sites
Want to apply or inquire about joining this study? Fill out this simple questionnaire, and our assistant will instantly generate a professional email draft you can copy and send to the central contact coordinator listed above!
View Official Medical/Scientific Title
Pilot Study of "Bottarga" Supplementation: A Little-known, Sustainable "Blue" Food