Status: Recruiting

Curcumin and Retinal Study

To test how two weeks of curcumin supplementation would cross the blood brain barrier (BBB) and attach to amyloid beta proteins, to assess the feasibility (safety and bioavailability), and to explore the resulting abundance/composition of gut microbiota.

Participants needed: 60

Trial details

Phase: Phase 1, Phase 2Age: 40-89Biological sex: AllType: InterventionalSponsor: Texas Tech University Health Sciences CenterUpdated: Jan 13, 2026Locations: 1

Eligibility criteria

Both male and female, age 40 - 89 years. [+7]

Status: Recruiting

Bioavailability of Ration Items Containing Tart Cherry Extract

To determine how consuming food items containing shelf-stored tart cherry impacts your body's ability to absorb and use the compounds within tart cherry.

Participants needed: 15

Trial details

Age: 17-39Biological sex: AllType: InterventionalSponsor: United States Army Research Institute of Environmental MedicineUpdated: Dec 29, 2025Locations: 1

Eligibility criteria

Are between the ages of 18 (or 17 for military personnel) and 39. [+3]

• Unable to understand verbal or written instructions or testing materials in En... [+9]

Status: Recruiting

Bioavailability of Aronia Melanocarpa

The main objective of this study is to study the bioavailability and kinetics of acute Aronia Melanocarpa supplementation in healthy young (18-35 years) and older adults (55-75 years) adults. During the test day, participants will ingest a drink consisting of Aronia Melanocarpa extract (AME). The bioavailability and kinetics of AME will be assessed via frequent blood sampling, urine collection, and faecal sampling, in which AME and metabolite profiles will be quantified.

Participants needed: 16

Trial details

Age: 18-75Biological sex: AllType: InterventionalSponsor: Maastricht University Medical CenterUpdated: Jun 13, 2024Locations: 1

Eligibility criteria

BMI between 18-35 kg/m2 [+3]

Smoking or smoking cessation < 12 months [+8]