<<Disclaimer: Verify this information before applying it to your situation.>> Dear Listmembers ~ So many of you responded to my request for information on what might cause bloody stools. Most suggested hemorrhoids, either internal or external, caused by the change to GF diet and not enough fiber ingested. Cancer Fissures from constipation could bleed. Polyps can cause bleeding when straining. Porphyria (rare) has 8 forms of this disease. Parasites such as Shigela. And e.coli. Perhaps candida yeast dying off. Intestinal problems such as colitis, ulcerative colitis, and diverticulitis. Inflammation and the ensuing scarring could cause a narrowing which could bleed while digesting. Breathing chemical fumes caused hot flashes, sweats, bloody diarrhea and nausea in one person. DH Milk products, infection from uncooked foods, and cheating on the GF diet. Not absorbing Vitamin K. Lack of fiber. Add flax meal, more vegetables and fruit. Drink at east 8 glasses of water a day. Actually, our son eats plenty of fiber and has consumed more than 8 glasses of water a day ~ probably because of the Sjogren's Syndrome ~ for the last nine years. As I said in my original post, he never had 'typical' celiac symptoms. But does have Sjogren's and Raynaud's syndromes, also fibromyalgia (very tight and painful muscles and joint aches, chronic fatigue, and depression). We discovered the CD only after my husband's cousin was finally diagnosed (after years of "IBS") by Dr. J. Murray, then in Iowa City. When Dr. Murray was told of our son's autoimmune problems, he suggested he had celiac and should be tested. The blood tests were positive and the biopsy showed full-blown celiac. How this could be, we don't know. Only AFTER going gluten free did he develop pains in his digestive system. And now severe pain and blood. (Almost 9 mths gf.) He never cheats on his diet and if he has ingested any gluten it was unknowingly. His paternal grandmother died a year and a half ago of intestinal cancer and had dermatomyositis. We think she was an undiagnosed celiac. After our son's diagnosis, his father was tested. Blood was positive, biopsy negative. He has chosen to be gluten free. I took advantage of the blood testing done here in Seattle for the Maryland Celiac Research this Spring. Needless to say, we were shocked to have the blood work come back positive for all three tests. I have a biopsy scheduled for Thursday. I had been gluten free, also, since our son's diagnosis, and really didn't enjoy the discomfort of eating gluten again (two mths prior to the testing). We thought it could just be intolerance. Today our son's GI MD told us blood is not normal in bowel movements. He doesn't have external hemmorhoids. More hemoccult cards will be filled, and a colonoscopy is scheduled. Presently there is no noticable blood on his stools. Thanks so much for caring. Your prayers would be appreciated. Jude Seattle WA