Clinical trial Recruiting at 1 site Interventional Ages 18 to 60

Exploring the benefits of Bottarga supplementation for prediabetes

Official title: Pilot Study of "Bottarga" Supplementation: A Little-known, Sustainable "Blue" Food

Run by Cambridge Health Alliance · NCT06988462 · Data updated 2026-11-12

This study is testing if adding Greek Bottarga to the diet can help overweight people with prediabetes improve their metabolic health compared to a similar dairy product.

More Diabetes trials

Quick facts

Study typeInterventional
Ages18 Years to 60 Years
SexAll
Enrollment20 (estimated)
SponsorCambridge Health Alliance
Academic / other
Locations1 site (Sommerville, Massachusetts)
StatusRecruiting
StartedOctober 17, 2025
Main results expectedDecember 25, 2026
Study endsMarch 1, 2027
Registry record updatedJuly 16, 2026
Trial IDNCT06988462 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 to 60 years, residing in Massachusetts, with a diagnosis of prediabetes and a BMI greater than 27 kg/m².

Probably not a fit

Patients currently on diabetes medications, those with certain dietary restrictions, or those with specific health conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This pilot study investigates the effects of Greek Bottarga, a sustainable marine food, on overweight individuals diagnosed with prediabetes. Initially, a dose-testing phase will assess the impact of daily Bottarga consumption on metabolic health markers in five participants. Following this, a randomized controlled crossover trial will compare the metabolic effects of Bottarga supplementation against a calorically matched dairy product over an 8-week period, with a 2-week washout phase. The study aims to evaluate improvements in lipid profiles, inflammation, and insulin resistance.

Why it matters

Potential benefit: If successful, this study could provide a novel dietary intervention to improve metabolic health in prediabetic patients.

How similar studies have gone: While no human studies on Bottarga have been published, the exploration of sustainable marine foods in dietary interventions is a novel approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
* Adults aged 18-60 years
* Residents of Massachusetts
* Presence of at least one metabolic abnormality (low HDL cholesterol, elevated LDL cholesterol, elevated triglycerides, obesity, or HbA1c ≥ 5.7%) or a diagnosis of diabetes
* Not pregnant
* Willing to consume a nutritional supplement and comply with study procedures

Exclusion Criteria:

* 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

Where it's running

  • Cambridge Health Alliance
    Sommerville, Massachusetts, United States
    Recruiting

Study contacts

  • Principal investigator: Stefanos N Kales, Professor of Medicine, Harvard Medical School, MD — Cambridge Health Alliance

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.