Blood Glucose ConcentrationNCT07131904
Non-alcoholic, Fiber-enriched Beer and Its Effect on Blood Glucose Concentration
A study testing non-alcoholic, fiber-enriched beer (FEB), conventional, non-alcoholic beer and glucose solution in people with Blood Glucose Concentration and Glycemic Index, run by David Faeh at 1 site in Switzerland.
Trial summary
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. Read more about this study
- Who is it for?
- Ages 18 to 60 yearsHealthy volunteers can take part
- Conditions the study is for
- Blood Glucose Concentration, Glycemic Index, Dietary Fiber
- What is being tested?
- non-alcoholic, fiber-enriched beer (FEB), conventional, non-alcoholic beer and glucose solution
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 22 participants
- Where
- 1 siteSwitzerland
- Study dates
- 1 Oct 2025to 27 Nov 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 60 years
- All sexes
- Healthy volunteers accepted
- Adult
Who may be able to join
- Healthy adults aged 18-60 years
- Body mass index (BMI) between 18.5 and 29.9 kg/m²
- Signed informed consent
Who cannot join
- 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)
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- 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
Trial locations and contacts
1 site in 1 country.
Switzerland1 site
Bern University of Applied Sciences, Murtenstrasse 10, 3008 Bern
Bern, Canton of Bern, 3008
About this study
Official title: Non-alcoholic, Fiber-enriched Beer and Its Effect on Blood Glucose Concentration: A Scientific Study
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.
- Being tested
- non-alcoholic, fiber-enriched beer (FEB), conventional, non-alcoholic beer, glucose solution
- Keywords
- fiber-enriched beer, functional food, continuous glucose monitoring, postprandial glucose response
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
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 beerOther
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 solutionOther
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).
| Study group | Role | What they receive |
|---|---|---|
| non-alcoholic, fiber-enriched beer (FEB) | Experimental | Not described Receives: Other: non-alcoholic, fiber-enriched beer (FEB) |
| conventional, non-alcoholic beer | Active comparator | Not described Receives: Other: conventional, non-alcoholic beer |
| glucose solution | Active comparator | Not described Receives: Other: glucose solution |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incremental Area Under the Curve (iAUC) for Postprandial Blood Glucose
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.
Measured: 0-120 minutes after beverage consumption on each test day
Secondary outcomes (1)
Glycemic Index of Fiber-Enriched Beer (FEB)
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.
Measured: 0-120 minutes after beverage consumption on each test day
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted20 Aug 2025
- Study start1 Oct 2025
- Primary completion15 Nov 2025
- Study completion27 Nov 2025
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Blood Glucose ConcentrationStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 22 participants (actual)
Sponsor and investigators
- Lead sponsor
- David Faeh
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, David Faeh, Bern University of Applied Sciences
- Investigators
- Tamara Bucher, Study director, Bern University of Applied Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07131904
- Sponsor's protocol ID
- Fiberbeer trial
- Status last verified
- Oct 2026
- First submitted
- 13 Aug 2025
- Last updated
- 15 Oct 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Study at a glance
From the registry record, last updated by the sponsor on 15 Oct 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Non-alcoholic, Fiber-enriched Beer and Its Effect on Blood Glucose Concentration: A Scientific Study
- ClinicalTrials.gov ID
- NCT07131904
- Acronym / sponsor ID
- Fiberbeer trial
- Keywords
- fiber-enriched beer, functional food, continuous glucose monitoring, postprandial glucose response
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 22 participants (actual)
- Lead sponsor
- David FaehUniversity, hospital or other
- Study start
- 1 Oct 2025 (actual)
- Primary completion
- 15 Nov 2025 (actual)
- Study completion
- 27 Nov 2025 (actual)
- First posted
- 20 Aug 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
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.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| non-alcoholic, fiber-enriched beer (FEB) | Experimental | Other: non-alcoholic, fiber-enriched beer (FEB) |
| conventional, non-alcoholic beer | Active comparator | Other: conventional, non-alcoholic beer |
| glucose solution | Active comparator | Other: glucose solution |
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (3 listed)
- Healthy adults aged 18-60 years
- Body mass index (BMI) between 18.5 and 29.9 kg/m²
- Signed informed consent
Key exclusion criteria (12 listed)
- Diagnosed diabetes
- Gastrointestinal diseases
- Hormonal or other metabolic diseases
- Allergies or intolerances to beer ingredients
- Professional sports (>10 hours/week of intense exercise)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| non-alcoholic, fiber-enriched beer (FEB)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). | Other | non-alcoholic, fiber-enriched beer (FEB) |
| conventional, non-alcoholic beer500 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). | Other | conventional, non-alcoholic beer |
| glucose solutionGlucose 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). | Other | glucose solution |
Primary outcome
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.
1 secondary outcome
Glycemic Index of Fiber-Enriched Beer (FEB)
Time frame: 0-120 minutes after beverage consumption on each test day
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 Oct 2026.
- Individual participant dataSharing planned: Undecided
Related trials for Blood Glucose Concentration
Not yet recruiting
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Postprandial Glucose, Blood Glucose Concentration
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Tamara Bucher study director
Bern University of Applied Sciences
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing non-alcoholic, fiber-enriched beer (FEB), conventional, non-alcoholic beer and glucose solution in people with Blood Glucose Concentration and Glycemic Index, run by David Faeh at 1 site in Switzerland.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 12 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 15 Oct 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Switzerland. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incremental Area Under the Curve (iAUC) for Postprandial Blood Glucose (time frame: 0-120 minutes after beverage consumption on each test day). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 Oct 2026.