Agglutinins are a type of lectin that causes cells to clump together. This lectin came in handy when we needed it to survive, but now this is the very thing that has become detrimental to our health. So whenever you eat foods with this component, like anything with carbohydrates, the gut has a hard time digesting it. This can cause a build up or or other issues that can lead to autoimmune diseases, like leaky gut.