Why does bariatric surgery often cause type 2 diabetics to rapidly reduce or eliminate their need for insulin injections?

💡 Explanation

Bariatric surgery often increases GLP-1 secretion in the ileum because the accelerated transit of nutrients stimulates L-cells. This enhanced GLP-1 secretion improves insulin sensitivity and secretion; therefore, patients need less exogenous insulin, rather than needing more due to increased glucagon or cortisol.

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