The gut lining acts as a protective barrier between the digestive tract and the bloodstream. When that barrier becomes compromised, a condition known as intestinal permeability or leaky gut, undigested food particles, toxins, and harmful bacteria can pass through and trigger widespread inflammation throughout the body. This shows up as skin issues, digestive discomfort, immune dysregulation, and is recognized as one of three known triggers of autoimmunity. It has also been directly linked to conditions like Hashimoto's and PCOS. Healing the gut lining is often one of the most impactful first steps in a root-cause healing protocol.