Gut Microbiome Clinical Trial
Official title:
Evaluation of Dietary Milk Polar Lipids on Serum Cholesterol and Gut Microbiota in Healthy Adults
The purpose of this study is to examine whether the daily consumption of 5 g of milk polar lipids influences serum lipids and gut microbiota composition in healthy adults.
Healthy adults will be recruited to participate in a randomized, single-blind, controlled, 13-week crossover trial. Participants will follow a 2-week run-in control period consuming their habitual diets. Participants will then be randomized to consume 20 g of milk fat daily in the form of either a reconstituted milk polar lipid (MPL)-rich dairy beverage (MPL; providing 5.3 g MPL daily) or a control dairy beverage (CTL; providing 0.3 g MPL daily), each for 4- weeks, separated by a 3-week washout period. Participants will be instructed to consume intervention treatment/control beverages at breakfast (50 g) and dinner (50 g) and reconstitute the powders in water immediately prior to consumption. With the exception of the intervention beverages, participants will be asked to maintain their normal diet and exercise habits throughout the study. Venous blood will be collected after a 12-hour overnight fast into EDTA-coated (glucose analysis) and serum (lipid analyses) collection tubes. Passive drool and stool samples will be collected at the end of the run-in period (baseline) and intervention periods (treatment and control). Participants will be asked to complete a 5-day dietary record, food preference/liking/sedentary behavior surveys, and 7-day physical activity diary at the beginning and end of intervention periods. ;
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