About this trial
The aim of the study is to investigate the effect of non-nutritive sweeteners on glucose regulation. Secondary objectives are to investigate the effect of NNS on gut microbiome, gut hormone secretion, sweet taste sensitivity and preference, and the excretion of NNS in urine.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Age 45-79 years;
BMI of 20-35 kg/m2;
Having veins suitable for placement of a venflon catheter.
Disqualifiers
Diseases or prior surgeries affecting the stomach, liver, kidneys or intestines (allowed i.e. appendectomy);
Cardiovascular diseases (e.g. heart failure) or cancer (e.g. non-invasive skin cancer allowed);
Diagnosed with type 1 or type 2 diabetes;
Drug treated thyroid diseases (well substituted hypothyroidism is allowed for inclusion);
Trial design
Crossover
Treatments tested in this trial
Diet with non-nutritive sweeteners
Other interventionFully controlled diet with added mixture of non-nutritive sweeteners. The mixture consist of 6 different non-nutritive sweeteners: acesulfame-K, aspartame, cyclamate, saccharin, sucralose, and rebaudioside A (stevia).
Diet without non-nutritive sweeteners
Other interventionFully controlled diet without any non-nutritive sweeteners added.
Treatment groups
Trial outcomes
Primary outcomes
Difference in change in 2h iAUC glucose after 6 weeks between the intervention and the control.
The primary outcome measure is the difference in change in iAUC of blood glucose levels following a 2-hour oral glucose tolerance test (OGTT) after six weeks between the intervention period and the control period.
Secondary outcomes
Matsuda index
Matsuda index after an OGTT
Fasting blood glucose
Fasting blood glucose
Fasting blood insulin
Fasting blood insulin
Postprandial insulin response
2-hour iAUC blood insulin during OGTT
Other outcomes
Anthropometrics
Measured as weight (kg), height (m), waist circumference (cm), and hip circumference (cm). Weight and height will be combined to report BMI in kg/m\^2.
Body composition
Body composition as measured by DEXA (Dual Energy X-ray Absorptiometry).
Habitual food intake
Habitual dietary intake assessment with a food frequency questionnaire (FFQ).
Physical activity level
Physical activity level by the Short Questionnaire to Assess Health-enhancing physical activity (SQUASH).
Sponsors and contacts
Click on the lead sponsor to view all of their trials.
Wageningen University
Lead sponsor
Food & Biobased Research - Wageningen UR
Collaborator
TKI Agri & Food
Collaborator
The Magnum Ice Cream Company
Collaborator
Tate & Lyle
Collaborator
Symrise AG
Collaborator
American Beverage Association
Collaborator
Yildiz Holding
Collaborator