The Systemic Concentration of Short-Chain Fatty Acids After Delivery in the Small and Large Intestine of Healthy Volunteers

Inclusion Criteria: * female and male * healthy participants * age within 18 - 50 years * normal BMI (18.5-25 kg/m\^2) Exclusion Criteria: * Chronic gastrointestinal disorders such as inflammatory bowel disease (IBD), irritable bowel syndrome (IBS), celiac disease, chronic constipation (less than 3 stools a week) and chronic frequent diarrhoea (more than 3 stools a day) * Previous abdominal surgery, except from appendectomy * Being on a weight loss, gluten-free, lactose-free, or vegan diet * The donation of blood during the last 3 months or suffering from low blood haemoglobin levels * The use of antibiotics or other medication that affects the gastrointestinal tract 3 months preceding the study and/or during the study * The use of prebiotics or probiotics 2 weeks preceding the study and/or during the study * Pregnancy, lactation or wish to become pregnant during the study period * Previous or current substance/alcohol dependence or abuse (\> 2 units per day/14 units per week)