Clinical trial Recruiting at 1 site Phase1; Phase2 Interventional Ages 40 to 89

Curcumin supplementation for Alzheimer's disease diagnosis and gut health

Official title: Curcumin and Retinal Amyloid-beta Pilot Study

Run by Texas Tech University Health Sciences Center · NCT05774704 · Data updated 2026-11-12

This study is testing if taking curcumin for two weeks can help people with Alzheimer's by checking its effects on brain health and gut bacteria.

More Gut Microbiome trials

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages40 Years to 89 Years
SexAll
Enrollment60 (estimated)
SponsorTexas Tech University Health Sciences Center
Academic / other
Locations1 site (Lubbock, Texas)
StatusRecruiting
StartedAugust 21, 2023
Main results expectedDecember 31, 2026
Study endsDecember 31, 2026
Registry record updatedJanuary 13, 2026
Trial IDNCT05774704 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 40-89 diagnosed with amyloid beta deposits in the retina.

Probably not a fit

Patients with ocular diseases or those who have recently used antibiotics or curcumin products 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 study investigates the effects of two weeks of curcumin supplementation on its ability to cross the blood-brain barrier and bind to amyloid beta proteins in individuals diagnosed with Alzheimer's disease. The research aims to assess the safety and bioavailability of curcumin while also exploring changes in gut microbiota composition. Participants will be recruited from various community sources, and the study will involve both low and high curcumin dosage groups. The goal is to determine the feasibility of using curcumin as a diagnostic tool for Alzheimer's disease and its potential impact on gut health.

Why it matters

Potential benefit: If successful, this study could provide a novel approach for diagnosing Alzheimer's disease and improving gut health.

How similar studies have gone: While the specific approach of using curcumin for Alzheimer's diagnosis is novel, there is emerging evidence supporting the connection between curcumin and neurological health.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion:

* Both male and female, age 40 - 89 years.
* Diagnosed with Aβ deposits in retina (peripheral superior quadrants)--to be confirmed after consent obtained. If there is documentation the potential participant has been diagnosed with Aβ deposits in retina within 6 months before the consent session, we will use this diagnosis/documentation for eligibility criteria. Otherwise, the ophthalmic exam will be repeated after consent is obtained for the study.
* No pre-existing liver or kidney diseases by self-report.

Exclusion:

* Patients with ocular diseases (macular degeneration, severe diabetes retinopathy)
* Had used systemic antibiotics within 1 month prior to the start of the study intervention
* Had taken any turmeric or curcumin products within 2 weeks prior to the start of the study intervention
* Had a known allergy to black pepper
* Women that are pregnant or breastfeeding

Where it's running

  • Texas Tech University Health Sciences Center
    Lubbock, Texas, United States
    Recruiting

Study contacts

  • Principal investigator: Chwan-Li (Leslie) Shen, PhD — Texas Tech University Health Sciences Center
  • Study coordinator: Chwan-Li (Leslie) Shen, PhD
  • Email: leslie.shen@ttuhsc.edu
  • Phone: 8067432815

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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.