Also known as: WFPB, vegan diet, vegetarian diet, whole food plant-based, plant based
Latest evidence update: 2025-11-01
Strongest in Study quality (73). Held back by Recency (49).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Thousands of participants across the literature.
Mostly aligned, with some divergence.
Evidence base skews older; field may have moved on.
No quantified outcomes yet. Once we have studies with measurable endpoints, you will see per-outcome magnitude here.
Areas where research points to a consistent direction of effect. The strength of evidence is graded; the size of the effect is not quantified.
Diet centered on vegetables, fruits, legumes, whole grains, nuts, and seeds with minimal or no animal products. Strong evidence for cardiovascular risk reduction (Ornish, EPIC-Oxford).
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Adherence to plant-based diets was associated with better cognitive outcomes in stroke survivors.
No studies assessed the impact of a plant-based diet on microbial composition and glucose parameters in patients with prediabetes or type 2 diabetes.
Plant-based diets lower risk of cardiovascular disease and type 2 diabetes.
Plant-based diets result in lower blood pressure readings when compared to diets based on animal products.
The blood pressure-lowering effect of plant-based diets is mediated by multiple macro- and micronutrients abundant in plants.