Does Galactooligosaccharide Enhance Nutrient Availability

Exclusion Criteria

• •Use of products marketed as prebiotics, probiotics or synbiotics within 4 weeks prior to study entry (e.g. Yakult, Actimel, Activia, VSL#3, Kefir). Regular cheese or yogurt containing lactic acid bacteria are not an exclusion criterion.
• •Systemic antibiotic or antimycotic treatment within 4 weeks prior to study entry.
• •Following diets likely to affect study outcomes: e.g. low FODMAP, KETO/high-fat, gluten free/coeliac, paleo, weight loss, caloric restriction, low-carb, 5:2/whole day energy restriction, Atkins/high-protein, sugar-free, single-food, juicing/any day of juicing, any other restriction diet (e.g. very low calory), or vegan diets (GOS is derived from cow's milk).
• •Changes in diet, supplement use or medication likely to affect study outcomes within 2 months prior to study entry or planned during the study.