The benefits of gastric bypass in patients with diabetes

Written by

Dr. Luis Zavala

Published date

April 6, 2026

The benefits of gastric bypass in patients with diabetes

Gastric bypass surgery as a cure for diabetes

The director of the metabolic research laboratory at the Clínica Universitaria de Navarra, Gema Frühbeck, shares that gastric bypass not only manages to completely cure diabetes in the vast majority of patients, but even in those whose condition does not fully remit, a significant improvement can be observed, notably reducing the doses and/or the number of antidiabetic medications and insulin.

While obesity surgeries usually have a positive effect on patients with diabetes, the case of gastric bypass seems to be exceptional, as it is the only one that effectively and noticeably lowers the glycemic profile. The answer could very well lie in the hormonal changes that occur after the surgical intervention; by excluding a large part of the gastric fundus, ghrelin concentrations decrease, as does appetite. Furthermore, by shortening the digestive tract, the intestines absorb fewer nutrients and calories.

How gastric bypass works to lower the glycemic profile

Gastric bypass surgery has proven to be the best option for weight loss because it creates a small pouch in the stomach that connects to the small intestine. This way, food bypasses a large part of the stomach and a section of the small intestine. After the surgery, the stomach is permanently reduced to a quarter of its original size.

Gastric bypass as the start of a healthier life

Many patients suffer from obesity due to metabolic or hormonal problems, which is why another benefit of gastric bypass over other surgeries is that it initially helps improve the patient's eating habits. As mentioned on the Cuidate Plus portal, this surgery is the most widely used in the United States because it manages to reduce blood glucose and insulin levels just a few days after the operation, thereby making it easier for the patient to adopt habits that will improve their quality of life.

Before anyone opts for a surgical procedure like gastric bypass, it is necessary to consult a specialist who will evaluate the patient on a personalized basis. If deemed eligible for this type of surgery, they should consult a certified bariatric surgeon like Dr. Luis Zavala. He is a specialist in bariatric surgery and in providing solutions to achieve a healthier life, working alongside a team of specialists who guide the patient through a comprehensive service aimed at a higher quality of life.