In mice genetically engineered to develop severe artery plaque, a diet extremely high in fat and nearly free of carbohydrates led to less plaque buildup in the aorta compared to a diet with less fat and more carbohydrates, as measured by high-resolution imaging.
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.
Whether the reduction in aortic plaque burden is a consistent effect of ketogenic diets across multiple independent studies in ApoE-deficient mice using standardized imaging protocols.
A systematic review and meta-analysis of all controlled animal studies comparing ketogenic (≥70% kcal fat, ≤5% kcal carbohydrate) versus non-ketogenic high-fat diets in ApoE-deficient mice, with aortic plaque burden quantified using identical high-field MRI (≥14T) or histology, reporting standardized mean differences and confidence intervals.
Whether the ketogenic diet directly causes a reduction in aortic plaque burden compared to a control diet in ApoE-deficient mice.
A double-blind, randomized controlled trial in 80 male ApoE-deficient mice, randomly assigned to either a ketogenic diet (81% kcal fat, 1% kcal carbohydrate, 18% kcal protein) or an isocaloric non-ketogenic high-fat diet (40% kcal fat, 42% kcal carbohydrate, 18% kcal protein), with aortic plaque burden quantified via 14-tesla MRI at baseline and week 12 as primary endpoints, and analysts blinded to group assignment.
Whether the ketogenic diet is consistently associated with lower plaque burden across different strains of mice with varying metabolic and genetic backgrounds.
A prospective cohort study following 200 male and female mice across five different atherosclerosis-prone strains (ApoE−/−, LDLR−/−, B6, C57BL/6J, and mixed backgrounds), each fed either a ketogenic or non-ketogenic high-fat diet for 12 weeks, with serial MRI plaque measurements adjusted for sex, age, and baseline lipid levels.
Whether a snapshot of aortic plaque burden correlates with dietary fat and carbohydrate composition in a broader population of mice.
A cross-sectional analysis of aortic plaque burden via 14-tesla MRI in 500 mice from multiple laboratories fed diverse high-fat diets (ranging from 30–90% kcal fat and 0–50% kcal carbohydrate), with dietary composition and plaque measurements recorded at a single time point without intervention.
Whether rare individual mice on ketogenic diets show extreme suppression of plaque burden not seen in the group average.
A case series documenting aortic plaque burden via 14-tesla MRI in five ApoE-deficient mice that exhibited exceptionally low plaque burden (<5th percentile) despite being on the same ketogenic diet as others with moderate reductions.