Zonulin: GI Friend or Foe?
Zonulin is an inflammatory protein that was discovered by Alessio Fasano and his colleagues in 2000. This protein regulates the permeability of the gut lining. Friend: When pathogenic bacteria is present, zonulin is triggered and performs its part in protecting us by temporarily opening up or loosening up the tight junctions of the gut lining to release the bugs through diarrhea, helping us get rid of the bacteria. After the pathogenic bacteria exits the body, zonulin levels decrease and the tight junctions return to closure. Foe: No one is able to digest gluten. Six percent of the global population are gluten sensitive (not the same as allergies or intolerances). This is separate from those who have celiac disease. For the six percent who are gluten sensitive, gluten is a stronger trigger for zonulin. The result is higher than normal levels of zonulin for these individuals. With higher levels of zonulin, tight junctions remain permeable allowing toxins, undigested food, etc. to escap
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