People who follow vegetarian diets have about half the risk of dying from kidney failure and a 40% lower risk of dying from diabetes compared to meat-eaters, suggesting plant-based eating may protect against these chronic diseases.
Evidence from Studies
No evidence studies found yet.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
A meta-analysis of cohort studies could determine whether vegetarian diets consistently reduce death from kidney disease and diabetes across diverse populations and dietary definitions.
A systematic review and meta-analysis of at least 12 prospective cohort studies reporting cause-specific mortality from renal disease and diabetes in vegetarians versus nonvegetarians, using standardized ICD coding, adjusted for BMI, blood pressure, and glycemic control, with follow-up >10 years.
A randomized trial could determine whether adopting a vegetarian diet directly reduces incidence of fatal kidney disease or diabetes compared to a standard diet.
A double-blind, placebo-controlled trial randomizing 2,000 adults with prediabetes or early-stage chronic kidney disease to either a whole-food, plant-based vegetarian diet or a standard American diet for 10 years, with primary outcomes being death from renal failure or diabetes, and secondary outcomes including HbA1c, eGFR, and albuminuria.
A prospective cohort study could confirm whether vegetarian diets predict lower rates of fatal kidney and endocrine disease in populations without shared religious or lifestyle norms.
A prospective cohort study following 30,000 adults aged 40–75 from general U.S. populations, with dietary patterns assessed annually via food frequency questionnaires and cause-specific mortality tracked via national registries, adjusting for BMI, hypertension, and medication use.
A case-control study could compare past dietary habits of individuals who died from renal or endocrine causes versus those who died from other causes or survived.
A matched case-control study comparing 800 individuals who died from renal failure or diabetes before age 75 with 800 controls who died from trauma or cancer or were alive, using validated dietary recall over the prior 15 years, adjusting for age, sex, and socioeconomic status.
A cross-sectional survey could show whether people currently following vegetarian diets are less likely to have died from kidney or endocrine causes, but cannot determine causality.
A national survey measuring current dietary patterns and mortality status in 50,000 adults aged 40–80, comparing the proportion of vegetarians among those who died from renal or endocrine causes versus those who died from other causes or are alive.