Individuals on an intermittent-fasting and protein-pacing (IF-P) diet had fewer gastrointestinal symptoms and increased diversity in gut microbiota than those on a calorie-restricted (CR) Mediterranean-style diet in a small, randomized trial.
TAKEAWAY:
- The IF-P diet resulted in more substantial reductions in patient-reported symptoms of gastrointestinal problems and more pronounced increases in gut microbiota diversity and in the abundance of microbial families and genera associated with favorable metabolic profiles, such as Christensenellaceae, Rikenellaceae, and Marvinbryantia, than the CR diet.
- The IF-P diet significantly increased cytokines linked to lipolysis, weight loss, inflammation, and the immune response.
- With the CR diet, metabolites associated with a longevity-related metabolic pathway increased.
- The subgroup analysis of high and low responders to the IF-P diet showed an increased abundance of certain bacteria associated with metabolic benefits and anti-inflammatory effects among high responders, whereas low responders showed an increased abundance of butyrate-producing and nutritionally adaptive species such as Eubacterium ventriosum and Roseburia inulinivorans.
- A fecal metabolome analysis revealed that high responders showed enrichment of fecal metabolites involved in lipid metabolism, whereas more prominent pathways in low responders were related to the metabolism of amino acids and peptides, as well as tyrosine metabolism and arginine biosynthesis.
