INS and Hyperglycemia: Clinical follow‐up studies on obese patients who were also diabetic and had undergone bariatric surgery found that hyperglycemia was reversed in 83% of diabetic patients, and insulin secretion from the pancreas was significantly improved.22 Bariatric surgery commonly involves a duodenal jejunal bypass, which restricts nutrient access to the proximal small intestine by redirecting the stomach outlet to the distal intestine.