Solid Aug 10, 2026
“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”
Peer-reviewed systematic review and meta-analysis of 17 publications from prospective and case-control studies, with the authors grading strength of evidence "probable" for vegetarian diets and total cancer but only "limited-suggestive" for vegan diets, and flagging some cancer sites as "imprecise or near the null."
In the brief: Meta-analysis of 17 studies finds vegetarian and vegan diets cut cancer risk → (plant-based diet[tiab] OR vegan diet[tiab] OR vegans[tiab]) AND →