<prompt> Which of these are associated with increased risk of colorectal Ca -a More intake of animal fatb Aspirinc Ulcerative colitisd Amoebic colitise Polypsacdbdecdeace  <response>: Risk factors for Colon cancerDietay factures - explainaed in previous quetionHereditary factorsPolyposis coli Nonopolyposis herditary colon cancer also known as Lynch syndromeInflammatory bowel disease- Long standing IBD increases the risk- Risk is more with ulcerative colitis than crohns disese.- Risk increases with the duration and extent of colitis.4. Streptococcus bovis bacteremiaIndividuals who develop endocarditis or septicemia from this bacteria, have a high incidence of occult colorectal tumors and passibly upper GI cancers also.5. Other Risk factorsa Ureterosiginoidostomyb Cigarette smoking - is linked to the development of colorectal adenomas , particularly after 35 yrs of use.c Acromegalyd Pelvic irradiationAspirin other NSAIDs use has been foud to have a protective effect ChemoperventionOther substance found to have chemoprentive action are Oral folic acid supplementation, Oral calcium supplementation, Estrogen replacement therapy. 