Cruciferous vegetables intake and risk of colon cancer: a dose–response meta-analysis https://bmcgastroenterol.biomedcentral.com/articles/10.1186/s12876-025-04163-9 Broccoli can have a protective effect against colon cancer, study reveals https://medicalxpress.com/news/2025-08-broccoli-effect-colon-cancer-reveals.html The greatest risk reduction per gram was observed between 20 and 40 g