Effect of an Oral Nutritional Supplement (ONS) with Prebiotic Fibre Compared to a Non-fibre Containing ONS Equal in Energy and Protein Content on Gut Microbiota in Older Adults with or At Risk of Disease Related Malnutrition

Inclusion Criteria: * 1\. 65 years of age or older 2. Identified as at medium or high risk of malnutrition based on: a) MNA-SF score between 0 - 11 and / or b) are prescribed with ONS 3. In need of 2 servings of oral nutritional support/day (300 kcal; 12 gr protein per serving). 4\. a) Not being prescribed with ONS or b) being prescribed with non-fibre containing ONS and willing and able to switch from pre-study prescribed ONS to the Test or Control Product for participation in the study. 5\. Willing to maintain dietary habits for the duration of the study. Written informed consent from subject (or impartial witness after verbal consent of subject when subject is physically unable to sign and where allowed by local regulations). Exclusion Criteria: * 1\. Requirement for a fibre-free diet. 2. Have used nutritional supplements with fibre/prebiotics and/or probiotics content at any point during 3 weeks prior to start study (Visit 1) and / or will not refrain from using these kinds of products during the study period. 3\. Admitted to an intensive care unit. 4. Hemodynamically unstable. 5. Known allergy to cow's milk protein. 6. Known galactosaemia. 7. Known hepatic encephalopathy. 8. Known Irritable Bowel Syndrome. 9. Known severe lactose intolerance without using lactase. 10. Known history of GI surgery. 11. Known history of intestinal polyp removal within 3 months prior to the study. 12\. Known history of Immunotherapy. 13. Known history of GI cancer. 14. Acti…