Effects of Prebiotics on Cognition and Health
- Conditions
- Gastrointestinal HealthCognitive ChangePhysiological Stress
- Interventions
- Other: Lactose Free 1% Milk + 10 g prebioticOther: Lactose Free 1% Milk
- Registration Number
- NCT04551937
- Lead Sponsor
- University of Illinois at Urbana-Champaign
- Brief Summary
This research intervention aims to examine the effects of prebiotic consumption on changes in behavioral and biological measures of cognition and stress among adults.
- Detailed Description
Evidence-based dietary strategies provide behavioral means benefiting physical and cognitive function. Pertinent to the proposed work, dietary intake has been recently shown to have the potential to directly influence the gut microbiota composition as well as brain function. Specifically, the consumption of prebiotics or fibers metabolized by gut bacteria may also play a role. These foods are readily available in the marketplace, however, their implications for physical and cognitive function are not clear. Accordingly, the proposed study aims to investigate effects of prebiotic beverage consumption on changes in behavioral and biological measures of cognition and stress among adults.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 24
- Males and females
- Between the ages of 25-45 years at the time of consent
- BMI ≥18.5 kg/m2
- Normal or corrected-to-normal vision based on the minimal 20/20 standard in order to complete the cognitive task.
- Ability to drop-off fecal sample within 15 minutes of defecation
- Current pregnancy or lactation
- Tobacco use
- Dairy allergy or intolerance
- Prior diagnosis of metabolic and gastrointestinal disease (cardiovascular disease and type 1 or type 2 diabetes, chronic constipation, diarrhea, Crohn's disease, celiac disease, ulcerative colitis, irritable bowel syndrome, diverticulosis, stomach or duodenal ulcers, hepatitis, HIV, cancer, etc.)
- Prior diagnosis of cognitive or physical disability, including ADHD, severe asthma, epilepsy, chronic kidney disease
- Use of any anti-psychotic, anti-depressant, antianxiety, or ADD/ADHD medications
- Use of medications that alter normal bowel function and metabolism (e.g., recent antibiotic use, laxatives, enemas, anti-diarrheal agents, narcotics, antispasmodics, diuretics, anticonvulsants).
- Prior malabsorptive bariatric surgery (i.e. gastric bypass, sleeve gastrectomy) or restrictive bariatric surgery (i.e. adjustable gastric band)
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- CROSSOVER
- Arm && Interventions
Group Intervention Description Prebiotic Lactose Free 1% Milk + 10 g prebiotic 4-5 week period where participant will consume the intervention beverage Control Lactose Free 1% Milk 4-5 week period where participant will consume control beverage
- Primary Outcome Measures
Name Time Method Biological markers of stress 4-5 weeks Changes in 24-hour urinary cortisol, inflammatory markers (e.g. IL-6, CRP).
Behavioral markers of stress 4-5 weeks Change in reported questionnaire responses specific to depression, stress, and anxiety using the Depression, Anxiety, and Stress (DASS) Questionnaire.
- Secondary Outcome Measures
Name Time Method Gastrointestinal Microbiota composition 4-5 weeks Impact on bacterial genera abundances.
Cognitive function 4-5 weeks Computer tasks will be used to assess working memory, interference control, cognitive flexibility, and hippocampal function/relational memory
Gastrointestinal Microbiota alpha-diversity 4-5 weeks Impact on alpha-diversity measures
Gastrointestinal microbiota beta-diversity 4-5 weeks Impact on beta-diversity measures
Sleep 4-5 weeks The Pittsburg Sleep Quality Index (PSQI) will also be used to assess sleep, as will actigraphy.
Trial Locations
- Locations (1)
University of Illinois
🇺🇸Urbana, Illinois, United States