Intestinal permeability, or “leaky gut” is a condition in which the lining of the intestinal tract becomes damaged and more porous over time. In the setting of this acquired “leakiness”, bacteria, viruses, undigested proteins and other pathogens pass through and encounter the immune tissue located in the intestinal lining. Through a process called “cellular mimicry”, the immune system recognizes structural similarities of these invaders to our own organ tissue such as the thyroid, pancreas or connective tissue. This is often the root cause of many autoimmune conditions. Chronic inflammation, which often begins with a “leaky gut”, is thought to be the underlying cause of most chronic health conditions.