Macro partitioning
Long-term dietary patterns (specifically high plant fiber vs. high protein/fat) are the primary determinant of stable adult gut microbiome composition and enterotype classification.
Your long-term eating habits, not your last meal, define your gut ecosystem. To shift your microbiome toward a healthier state (e.g., increasing fiber-digesting bacteria), you must consistently consume high-fiber plant foods over months and years. Short-term diets will cause temporary shifts, but your microbiome will likely bounce back to its previous state once you return to your usual diet.
long term dietary patterns were identified as the primary predictor of an individual’s enterotype... The Bacteroides enterotype was associated with a Western-type diet high in proteins and fat, while the Prevotella enterotype was associated with plant fiber consumption.
Why this rating
Based on multiple observational cohort studies and controlled feeding experiments cited, though long-term human feeding studies are noted as limited.
Source
Diet and the development of the human intestinal microbiome
Noah Voreades et al. · Frontiers in Microbiology · 2014
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