Reasons for bright red blood in stool? can diet coke and beer cause it. i drink too much of both. i also only get blood when i need to go urgently.

No: Bright red blood usually means it is a problem right in the rectal ampulla, the very bottom of the GI tract. It is usually caused by hemorrhoids or fissures, although it could also be a polyp, and could also be inflammatory bowel disease. Any blood in stool needs investigation. See your pcp and/or get a referral to a GI specialist. You need a full exam. Too much beer is bad for you - talk to md.