Clinical trial Recruiting at 1 site Interventional Ages 18 to 75

Effects of hop compounds on the immune system in overweight individuals

Official title: Effect of Iso-alpha Acids and Xanthohumol on the Human Immune System in Overweight People With the Onset of Metabolic Diseases

Run by University of Vienna · NCT06745102 · Data updated 2026-11-12

This study tests whether compounds from hops can help boost the immune system in overweight people who might be at risk for metabolic diseases.

More Inflammatory Response trials

Quick facts

Study typeInterventional
Ages18 Years to 75 Years
SexAll
Enrollment24 (estimated)
SponsorUniversity of Vienna
Academic / other
Locations1 site (Vienna)
StatusRecruiting
StartedFebruary 1, 2024
Main results expectedOctober 1, 2025
Study endsDecember 30, 2025
Registry record updatedApril 15, 2025
Trial IDNCT06745102 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are overweight individuals with a BMI between 25 and 29.9 who also have pre-diabetes, fatty liver, or mild hypertension.

Probably not a fit

Patients with a history of gastrointestinal diseases, kidney or liver disease (other than simple fatty liver), or those on special diets 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 impact of Xanthohumol and Iso-alpha Acids, derived from hops, on the immune response in overweight participants who may have incipient metabolic diseases. Participants will consume a study drink containing these compounds along with a light breakfast, followed by multiple blood samples taken over several hours to assess various clinical parameters and inflammatory markers. The goal is to determine the protective effects of these compounds on isolated blood cells and how they differ from those in normal-weight individuals.

Why it matters

Potential benefit: If successful, this study could provide insights into dietary interventions that enhance immune function in overweight individuals at risk for metabolic diseases.

How similar studies have gone: While the specific combination of Xanthohumol and Iso-alpha Acids has not been extensively tested, similar studies on dietary compounds and immune response have shown promising results.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* BMI 25 - 29,9 kg/m²

as well as one or more of the following incipient metabolic diseases:

* pre-diabetes (fasting blood glucose 100-125 mg/dL),
* fatty liver (grade 1-3),
* high-normal blood pressure to mild hypertension (grade 1, systolic 140-159 mmHg)

Exclusion Criteria:

* History of diseases that could falsify the study results
* inflammatory bowel diseases
* malignant diseases of the gastrointestinal tract
* food allergies
* malabsorption
* kidney or liver disease (except simple fatty liver)
* symptomatic heart failure
* Taking medication to treat these diseases
* Consumption of special diets (e.g. vegan, gluten-free)
* Pregnancy

Where it's running

  • University of Vienna
    Vienna, Austria
    Recruiting

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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.