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NCT Number: NCT07131904

Non-alcoholic, Fiber-enriched Beer and Its Effect on Blood Glucose Concentration

This study examines how various non-alcoholic beverages affect blood sugar levels.

The beverages are a non-alcoholic, fiber-enriched beer, a conventional non-alcoholic beer, and a sugar solution. Participants drink one of these beverages on different days. Afterwards, a sensor on the upper arm is used to measure the sugar content in the body fluid under the skin over a period of two hours.

The aim is to find out how much blood sugar concentration rises after drinking. This will be used to check whether the non-alcoholic, fiber-enriched beer has a more favorable effect on sugar metabolism than conventional beverages. Participation is voluntary, and the data will be treated confidentially.

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Key information

Conditions

Blood Glucose Concentration Dietary Fiber Glycemic Index Non-alcoholic Beer

Age range

18 year–60 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy adults aged 18-60 years
  • Body mass index (BMI) between 18.5 and 29.9 kg/m²
  • Signed informed consent

Exclusion criteria

  • Diagnosed diabetes
  • Gastrointestinal diseases
  • Hormonal or other metabolic diseases
  • Allergies or intolerances to beer ingredients
  • Professional sports (>10 hours/week of intense exercise)
  • Special diets (e.g., low-carb, intermittent fasting)
  • Sleep disorders or inability to maintain regular sleep (e.g., shift work)
  • Pregnancy or breastfeeding
  • Smoking
  • Inability to speak German or English
  • Problems with alcohol, drug, or medication abuse
  • Inability to sign informed consent

Treatment and study plan

non-alcoholic, fiber-enriched beer (FEB)

Other

500 ml FEB consumed once during a test day in a randomized crossover design. Postprandial blood glucose is monitored for 120 minutes using a continuous glucose monitor (FreeStyle Libre 3).

conventional, non-alcoholic beer

Other

500 ml conventional non-alcoholic beer consumed once during a test day in a randomized crossover design. Postprandial blood glucose is monitored for 120 minutes using a continuous glucose monitor (FreeStyle Libre 3).

glucose solution

Other

Glucose solution containing 12.5 g glucose in 500 ml water, consumed once during a test day in a randomized crossover design. Postprandial blood glucose is monitored for 120 minutes using a continuous glucose monitor (FreeStyle Libre 3).

Primary outcomes

  1. Incremental Area Under the Curve (iAUC) for Postprandial Blood Glucose

    Time frame: 0-120 minutes after beverage consumption on each test day

    Incremental area under the curve for interstitial glucose concentration measured over 120 minutes after beverage consumption. Measurements obtained via continuous glucose monitoring (FreeStyle Libre 3) in a randomized crossover design.

Secondary outcomes

  1. Glycemic Index of Fiber-Enriched Beer (FEB)

    Time frame: 0-120 minutes after beverage consumption on each test day

    Glycemic index calculated using the incremental area under the curve for blood glucose after consumption of FEB, compared to glucose solution, according to ISO 26642:2010 methodology.

Study contacts

Contact information is provided by the study sponsor or research team.

David Fäh, Prof.Dr.med

CONTACT

[email protected]

+41 31 848 45 51

Neeser Lorena, Bsc

CONTACT

[email protected]

+41 77 423 18 45

Sponsors and collaborators

Lead sponsor

David Faeh

Other

Registry information

Official study title

Non-alcoholic, Fiber-enriched Beer and Its Effect on Blood Glucose Concentration: A Scientific Study

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
Aug 20, 2025
Registry last updated
Aug 20, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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