The gastrointestinal (GI) tract is a central hub for human health given its essential role in nutrient absorption, waste production and immunity. Diet is a major contributor to gut health including affecting the incidence and severity of GI disease. This is mediated, at least in part, by the presence of microbiota, a highly diet-dependent biome. In fact, dietary changes are capable of altering bacterial populations and/or microbial metabolism, which in turn, controls the type and abundance of small molecules being produced in the gut, many of which can exert biological effects. Several lines of evidence suggest that dietary protein in particular, can impact gut health. Therefore, this trial will test whether dietary protein type differentially impacts gut function in humans by carrying out a single-blinded randomized cross-over controlled feeding study in healthy individuals. Subjects will be provided with an individualized very low protein diet augmented with pea- or egg white-derived protein supplements, as their major protein source. The impact of consuming pea vs. egg white protein on 1) the fecal metabolome, 2) gut barrier function and 3) gastrointestinal symptoms will be determined.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
20
The indicated protein isolates will be given to subjects as their major protein source
Stony Brook University
Stony Brook, New York, United States
Fecal metabolome
Mass-spectrometry based analysis of the relative abundance of metabolites will be carried out on feces.
Time frame: This analysis will be carried out at baseline and the end of each treatment period, entailing 4 measurements over an approximately 36 day period
Intestinal permeability
Subjects will undergo lactulose-mannitol test to inform on gut permeability
Time frame: This analysis will be carried out at baseline and the end of each treatment period, entailing 4 measurements over an approximately 36 day period
Adherence to study diets
consumption of study diets will be recorded through subject-reported surveys before and after eating.
Time frame: Daily over two, 10-day periods
Amount of study diets consumed
Subjects will take pictures of food items before and after eating to assess the amount of each study diet item consumed.
Time frame: Daily over two, 10-day periods
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