How strong is the evidence for Plant-Rich Diet?

Large cohort studies, including UK Biobank and Nurses' Health Study data, along with a systematic review and meta-analysis on chronic kidney disease, consistently associate plant-rich dietary patterns with lower mortality and reduced risk of major chronic diseases, particularly when the plant foods are minimally processed and nutrient-dense rather than refined. That evidence is currently rated strong (78/100), built on 10 published studies, including 2 meta-analyses -- enough for real confidence in the effect.