Research
Mixed
Plant-based diets modulate the gut microbiome towards a favorable diversity of bacteria species, but the functional 'bottom up' signaling from these microbial changes to host health remains highly speculative.
While plant-based diets likely increase gut microbiome diversity, the direct health benefits of these changes are not yet fully understood or proven.
LimitedQualifiesVERY_LOW confidence
Initial experimental studies proposed novel microbiome-related pathways, by which plant-based diets modulate the gut microbiome towards a favorable diversity of bacteria species, yet a functional 'bottom up' signaling of plant-based diet-induced microbial changes remains highly speculative.
Why this rating
Based on 'initial experimental studies' and 'highly speculative' functional signaling.
Source
The effects of plant-based diets on the body and the brain: a systematic review
Evelyn Medawar et al. · Translational Psychiatry · 2019
DOI 10.1038/s41398-019-0552-0
systematic_reviewCited 345×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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- Short-to-moderate-term plant-based diets (≤24 months) significantly improve metabolic health outcomes, including weight loss, glycemic control, and lipid profiles, compared to conventional omnivorous diets in healthy, obese, and type-2 diabetic populations.Good
- There is currently insufficient evidence from interventional studies to establish a causal link between plant-based diets and improved cognitive function or mental health.Moderate
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