I'm wondering what the risk/danger/impact is of ingesting microcrystalline cellulose contained in supplements. The amount may indeed be very small...
I've read the posts on rpf - RP says adsorption is an issue. For someone with leaky gut/SIBO/gut motility issues, could the microcrystalline cellulose potentially be more of an issue?
I've searched extensively but haven't found any of the desired products without this excipient.
"Its presence in food, like that of the polyester imitation fat, microcrystalline cellulose, and many other polymers used to stabilize emulsions or to increase smoothness, is often justified by the doctrine that these molecules are too large to be absorbed. There are two points that are deliberately ignored by the food-safety regulators, 1) these materials can interact dangerously with intestinal bacteria, and 2) they can be absorbed, in the process called "persorption."" — Ray Peat, PhD
Pathologe 1993 Sep;14(5):247-252 [Persorption of microparticles]. Volkheimer G “Solid, hard microparticles, such as starch granules, pollen, cellulose particles, fibres and crystals, whose diameters are well into the micrometre range, are incorporated regularly and in considerable numbers from the digestive tract. Motor factors play an important part in the paracellular penetration of the epithelial cell layer. From the subepithelial region the microparticles are transported away via lymph and blood vessels. They can be detected in body fluids using simple methods: only a few minutes after oral administration they can be found in the peripheral blood-stream. We observed their passage into urine, bile, cerebrospinal fluid, the alveolar lumen, the peritoneal cavity, breast milk, and transplacentally into the fetal blood-stream. Since persorbed microparticles can embolise small vessels, this touches on microangiological problems, especially in the region of the CNS. The long-term deposit of embolising microparticles which consist of potential allergens or contaminants, or which are carriers of contaminants, is of immunological and environmental-technical importance. Numerous ready-made foodstuffs contain large quantities of microparticles capable of persorption.”
@yerrag
I would value your opinion on this!