The central hypothesis is that improving hydration through increased water consumption will change the relative abundance of mucolytic bacteria found in the stool. Therefore the specific aims are 1) to quantify intervention effects on fecal microbiota relative abundance and plasma lipopolysaccharide binding protein, 2) observe the effects of the intervention on bowel frequency and signs/symptoms of gastrointestinal stress, and 3) to investigate relations between executive function and hydration status.
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Fecal microbiota relative abundance
Timeframe: 3 weeks (baseline vs. follow-up)
Plasma lipopolysaccharide (LPS)
Timeframe: 3 weeks (baseline vs. follow-up)