Hi . There can be a number of potential causes for pale stool. I need to note that we are not medical professionals and, for your protection, cannot offer medical advice over the internet. I do want to share with you this article which discusses the various impacts of ulcerative colitis on stool: https://www.medicalnewstoday.com/articles/323436. Of course, only a doctor can provide the proper diagnostics to determine the specific cause. Hopefully others will chime in with their experiences. Best, Richard (Team Member)