European Journal of Nutrition

“vegetarian diets compared to non-vegetarian diets are associated with reduced risk of total cancer and seven specific cancer types, while vegan diets are associated with reduced risk of total and breast cancer”

study authors, European Journal of Epidemiology

A peer-reviewed systematic review of 17 publications from prospective studies, graded by World Cancer Research Fund criteria as "probable" for vegetarian diets and total, colorectal, colon and breast cancer, and "limited-suggestive" for vegan diets and total and breast cancer specifically.

In the brief: Meta-analysis finds vegan and vegetarian diets cut cancer risk → Requested Evidence →

“Plant-based diets may reduce cancer risk, particularly when they prioritize healthful, minimally processed plant foods”

study authors, European Journal of Nutrition

A peer-reviewed meta-analysis of 19 cohort and 13 case-control studies, observational data that can flag a pattern but can't prove it's the diet doing the causing.

In the brief: Meta-analysis finds only healthful plant-based diets lower cancer risk → (plant-based diet[tiab] OR vegan diet[tiab] OR vegans[tiab]) AND →