Glycemic Response to Two Doses of Low Sugar Apple Juice

Inclusion Criteria: 1. Males aged ≥ 18y 2. Impaired fasting glucose (IFG) 3. Written informed consent 4. Consent to collect stools and urine four times for three days Exclusion Criteria: 1. Subjects currently enrolled in another clinical study 2. Subjects having finished another clinical study within the last 4 weeks before inclusion. 3. Subjects having participated in the study HB-RCT1-2015 4. Hypersensitivity, allergy or idiosyncratic reaction to apple, apple juice or other apple containing food 5. Acute or chronic infections 6. Renal insufficiency 7. Gastrointestinal illness 8. No stools of type 5-7 of Bristol Stool Form Scale within the last week before inclusion 9. History of gastrointestinal surgery 10. Known fructose intolerance 11. Overt diabetes mellitus 12. Endocrine disorders 13. Any disease or condition which might compromise significantly the hematopoietic, renal, endocrine, pulmonary, hepatic, cardiovascular, immunological, central nervous, dermatological or any other body system with the exception of the conditions defined by the inclusion criteria 14. History of hepatitis B and C 15. History of HIV infection 16. History of coagulation disorders or pharmaceutical anti-coagulation (with the exception of acetylsalicylic acid) 17. Regular medical treatment including OTC, which may have impact on the study aims (e.g. gluconic acid-containing OTCs, antidiabetic drugs, laxatives etc.) 18. Major cognitive or psychiatric disorders 19. Subjects who are scheduled to undergo hospitalization during the study period 20. Eating disorders (e.g. anorexia, bulimia) or special diets (e.g. vegan, vegetarian) 21. Present drug abuse or alcoholism 22. Legal incapacity