I have suffered with colon problems all my life. I get very sick and end up with diarrhea. I now am deficient in Vit B12, Vit D and have been iron deficient anemia. It was so severe they was going to give me blood transfusions, but I opted for the iron infusion.
I have had the blood test ran for Celiac's and it came back negative. I'm going to go gluten...