Probiotic Delivered to the Small Intestine Changes Microbiota

Inclusion Criteria: * Capacity to obtain and sign informed consent before any study-related procedure * BMI range 18.5-31.9 kg/m2 * Willing to abstain from regular consumption of probiotic supplements or food products containing probiotic bacteria (including fermented food and beverages). * Willing to abstain from regular consumption of supplements and medications known to alter gastrointestinal function or inflammatory status during the study. Exclusion Criteria: * Smoking * Substance abuse * Pregnancy * Diagnosis of type 1 and/or type 2 diabetes * Current (or within the last 4 weeks prior to the study start) use of probiotic supplementation. * Immobile (defined as the inability to participate in all study-related procedures) * History of complicated gastrointestinal surgery * Diagnosed with inflammatory bowel disease (IBD) * Current diagnosis of psychiatric disease/s or syndromes * Current diagnosis of neurodegenerative disease * Systemic use of antibiotics and/or steroid medication in the last 4 months prior to inclusion * Use of any non-steroidal anti-inflammatory drug (NSAID) more than 3 times a week for the last 2 months * Consumption of any NSAID within 7 days of study start * Any condition which could substantially interfere with intestinal barrier function (e.g. gluten sensitivity, lactose intolerance, celiac disease, IBS, IBD) or in any other way with the outcome of the study, as decided by the principal investigator's discretion * Regular smoking, use of snuff, …