I normally eat home cooked whole foods, and I don't worry about additives when I very rarely eat anything processed. However, after not eating any processed foods at all since June 2020, I recently decided to buy a pack of BFree Sweet Potato Wraps, which I used to enjoy. I had one a day for 4 days, and found they were having a slightly laxative effect. After carefully thinking about whether I had changed anything else I was eating, I looked at the ingredients. I had an empty older (2019) pack in my drawer, as I keep useful re-sealable bags for freezing, and compared the two. The difference is carboxy methyl cellulose, which wasn't on the earlier ingredient list but is now. I have just looked it up, starting with Wikipedia, where I learned that it has industrial uses, but in its pure form is a food additive as well as being used in toothpaste and some medicinal products. Under the heading of "adverse reactions" which it says are uncommon, it says that "Carboxymethyl cellulose has been found to cause inflammation of the gut, altering microbiota, and was found to be a triggering factor of inflammatory bowel diseases" I followed this up using one of the references supplied (no 14) and learned that in animal studies it produces inflammation similar to ulcerative colitis and Crohns disease.
BFree have a helpful website, which lists the ingredients in their products, and it looks as though this is the only product that uses this stuff.
Has anyone else found this a problem? Or does anyone know any more than I have just found in a short research session? Should I give up my occasional wraps? I am keen to preserve the healthiest microbiome possible!