A Double Blind Study on the Gastrointestinal Effects of Arabinoxylan (Leaf Fiber Extract).

The objective of this study is to investigate the effect on Arabinoxylan on gastrointestinal (GI) tolerance, bowel habits, and microbiota in adults. The study is a randomized, placebo-controlled, crossover, single-center trial with 3 study periods separated by minimum 2-week washout periods. 45 healthy adults will be recruited for the trial. Participants will be required to drink a beverage twice a day for 3 weeks during each study period. The beverage will contain either approximately 7.25 grams of Arabinoxylan leaf fiber extract per day, or approximately 14.5 grams of Arabinoxylan leaf fiber extract per day, or will not contain any Arabinoxylan (control). Subjects will record their bowel movements daily, fill out daily questionnaires about their gastrointestinal systems, and record their food intake at specified times during the study. Stool samples will also be collected prior to and at the end of each study period for analysis of bacteria composition.