RecruitingBehavioural interventionBILe Acid-gut Microbiome Axis MODification Through Diet Education for Colorectal Cancer PreventionThis research study is a prospective, single-arm clinical trial to assess the effect of a dietary intervention for more plant-based and less animal-based food intake on secondary bile acid production, gut microbiota, circulating biomarkers and gene expression associated with colonic bile acid receptor activation and colorectal cancer.