The carb lectins which cause t2 diabetes would normally be too big to transport from the small intestine into the bloodstream. With age people set up intestinal immune reactions. These reactions cause zonulin release. Zonulin defeats the “tight junctions” between intestinal lining cells. Partially digested intestinal lumen flows into the bloodstream including large lectins. This process takes place in the small intestine’s headwaters. Over time this area becomes more porous. The surgery you refer to removes this section of intestine. Most people who get it experience a marked reduction in metabolic and autoimmune symptoms. Without initiating a ketogenic diet though, symptoms usually return.
Over time this area becomes more porous. The surgery you refer to removes this section of intestine.
*********************************************************
He had gastric sleeve, not bypass.