<<Disclaimer: Verify this information before applying it to your situation.>> A likely cause of blood in the stool are polyps in the colon. Nearly all are benign initially, but may require regular removal. I had 3 at the time of celiac diagnosis, a family history of it, the dangerous type and am now on an annual colonoscopic cleaning list. Untreated the cancer risk is higher than that of untreated celiac. Risk very low with the annual exam. Kemp Randolph Long Island [log in to unmask]