Effect of Urolithin A on Blood Flow in Obese Middle-aged Adults

Urolithin A Supplementation to Improve Endothelial and Cerebrovascular Function in Middle-aged Adults With Obesity

Not applicable Interventional University of Oklahoma · NCT05921266

This study is testing if a dietary supplement called urolithin A can improve blood flow and vascular health in middle-aged adults who are obese.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment54 (estimated)
Ages40 Years to 64 Years
SexAll
SponsorUniversity of Oklahoma Academic / other
Locations1 site (Oklahoma City, Oklahoma)
Trial IDNCT05921266 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the impact of urolithin A, a dietary supplement, on blood flow in middle-aged adults with obesity. Participants aged 40-64 with a BMI of 30 or greater will take either urolithin A or a placebo daily for four weeks. The study will assess changes in endothelial function and blood flow through various measurements and blood samples taken at the beginning and end of the trial. The goal is to determine if urolithin A can improve vascular health in this population.

Who should consider this trial

Good fit: Ideal candidates are middle-aged adults aged 40-64 with a body mass index of 30 kg/m2 or greater.

Not a fit: Patients with uncontrolled hypertension, significant cardiac disease, or a history of neurodegenerative disorders may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to a new dietary intervention for improving vascular health in middle-aged adults with obesity.

How similar studies have performed: While the specific effects of urolithin A on blood flow in this demographic are novel, similar studies have shown promise in using dietary supplements to improve vascular health.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age: 40-64 years old, inclusive
* Obesity \[BMI ≥30 kg/m2\]
* Ability to read, write, and speak English
* Competence to provide written informed consent

Exclusion Criteria:

* Pregnant or breastfeeding women, or women who intend to become pregnant within the study period
* History of uncontrolled hypertension
* History of uncontrolled type 1 or type 2 diabetes mellitus
* Significant cardiac disease or chest pain in the last 6 months
* History of untreated depression or anxiety
* History of cognitive impairment
* History of uncontrolled significant GI disease (e.g., IBS, Crohn's disease)
* Allergy or intolerance to one or more of the intervention components
* Undergoing treatment for active cancer
* History of neurodegenerative disorders (e.g., multiple sclerosis)
* Presence of any condition affecting swallowing ability
* Any other medical condition that the investigators deem would adversely affect the participant's safety or ability to complete the study

Where this trial is running

Oklahoma City, Oklahoma

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions ObesityVascular DementiaCognitive ImpairmentUrolithin AMiddle agedFlow-mediated dilationEndothelial functionfNIRS
Last reviewed 2026-06-13 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.