Skip to content

Testing how bread with different amounts of fiber affects blood sugar and insulin levels

Glycemic and insulin metabolism testing of arabinoxylan-enriched bread

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN41186851
Enrollment
48
Registered
2024-12-17
Start date
2025-01-02
Completion date
Unknown
Last updated
2026-08-31

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Other disorders of glucose regulation and pancreatic internal secretion Nutritional, Metabolic, Endocrine

Interventions

During the study visits, participants will be given either bread or a glucose solution. The 10 test breads will vary in fiber content, and each type of bread will be consumed once on separate occasion

Sponsors

Imperial College London
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: 1. Age between 18-65 years (inclusive) 2. Body mass index (BMI) of 18-30 kg/m2 3. Willingness and ability to give written informed consent and willingness and ability to understand, to participate and to comply with the study requirements.

Exclusion criteria

Exclusion criteria: 1. Screening blood results outside of normal reference values 2. Weight change of > = 5kg in the preceding 2 months 3. Current smokers 4. History of substance abuse and/or excess alcohol intake 5. Pregnancy 6. Diabetes 7. Cardiovascular disease 8. Cancer 9. Gastrointestinal disease e.g. inflammatory bowel disease or irritable bowel syndrome 11. Kidney disease 12. Liver disease 13. Pancreatitis 14. Having polycystic ovary syndrome (PCOS) 15. Started new medication within the last 3 months likely to interfere with energy metabolism, appetite regulation and hormonal balance, including anti-inflammatory drugs or steroids, antibiotics, androgens, phenytoin, erythromycin or thyroid hormones. 16. Subjects who are currently participating in other clinical trials 17. Any blood donation within the 12 week period prior to entering this study 18. Subjects who are unable to give informed consent by themselves

Design outcomes

Primary

MeasureTime frame
Blood glucose levels measured via the glycaemic response measured in blood samples collected by cannulation at 15, 30, 45, 60, 90, and 120 minutes post-consumption.

Secondary

MeasureTime frame
Current secondary outcome as of 20/08/2026: Blood insulin, GIP and C-peptide levels measured in blood samples collected by cannulation at 15, 30, 45, 60, 90, and 120 minutes post-consumption. Previous secondary outcome: Blood insulin and C-peptide levels measured in blood samples collected by cannulation at 15, 30, 45, 60, 90, and 120 minutes post-consumption.

Countries

England, United Kingdom

Contacts

Public ContactGary Frost
g.frost@imperial.ac.uk+44 (0)20 7594 0959

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Sep 19, 2026