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New study shows metabolic and bariatric surgery prevents pre-diabetes from developing into type 2 diabetes in most patients

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Patients with pre-diabetes and severe obesity who had metabolic and bariatric surgery were 20-times less likely to develop full-blown type 2 diabetes over the course of 15 years than patients with the condition who did not have surgery, according to a new study* presented today at the American Society for Metabolic and Bariatric Surgery (ASMBS) 2024 Annual Scientific Meeting.

Only 1.8% of patients progressed to a diagnosis of diabetes in five years after metabolic surgery (Roux-en-Y gastric bypass or sleeve gastrectomy), which rose to 3.3% in 10 years and 6.7% after 15 years. The protective effect against diabetes was higher among gastric bypass patients. Meanwhile, nearly a third (31.1%) of patients with no prior metabolic surgery saw their prediabetes develop into diabetes within five years, which increased to 51.5% and 68.7% at 10 and 15 years, respectively. Patients on average lost 29.4% of their body weight at 12 months and 27.6% at 36 months. Greater weight loss at three years was associated with a lower risk of progression to diabetes.

“This is the first study to analyze the long-term impact of metabolic and bariatric surgery on the potential progression of prediabetes and the impact is significant and durable,” said David Parker, MD, study co-author and a bariatric surgeon at Geisinger Medical Center in Danville, PA. “It demonstrates that metabolic surgery is as much a treatment as it is a prevention for diabetes.”

Prediabetes is a serious condition that occurs when blood sugar levels are higher than normal, but not high enough to be considered type 2 diabetes. According to CDC, approximately 98 million Americans — more than 1 in 3 — have prediabetes and 38.4 million have diabetes.

This retrospective study included 1,326 patients who had prediabetes before undergoing either Roux-en-Y gastric bypass (n= 1,154) or sleeve gastrectomy (n = 172) between 2001-2022. Non-surgical controls from a primary care cohort were propensity matched by hemoglobin A1c, age, sex, and body mass index (BMI). More than 80% of patients were female, an average of 45 with a mean BMI of 46.9, and median follow-up 7.2 years.

“Think of all the negative health consequences from diabetes patients may avoid through metabolic surgery,” said Marina Kurian, MD, ASMBS President, who was not involved in the study. “Prevention of diabetes is the best treatment.”

The ASMBS reports that nearly 280,000 metabolic and bariatric procedures were performed in 2022, which represents only about 1% of those who meet eligibility requirements based on BMI. According to the U.S. Centers for Disease Control and Prevention (CDC), obesity effects 42.4% of Americans. Studies show the disease can weaken or impair the body’s immune system and cause chronic inflammation and increase the risk of many other diseases and conditions including cardiovascular disease, stroke, type 2 diabetes, and certain cancers. 

About Weight-Loss Surgery
Metabolic, bariatric, or weight-loss surgery such as gastric bypass and sleeve gastrectomy has been shown to be the most effective and long-lasting treatment for severe obesity. The operations improve or resolve diseases including type 2 diabetes, heart disease and high blood pressure and leads to significant and durable weight loss. Its safety profile is comparable to some of the safest and most commonly performed surgeries in the U.S. including gallbladder surgery, appendectomy and knee replacement.

About ASMBS

The ASMBS is the largest organization for bariatric surgeons in the United States. It is a non-profit organization that works to advance the art and science of bariatric surgery and is committed to educating medical professionals and the lay public about bariatric surgery as an option for the treatment of severe obesity, as well as the associated risks and benefits. It encourages its members to investigate and discover new advances in bariatric surgery, while maintaining a steady exchange of experiences and ideas that may lead to improved surgical outcomes for patients with severe obesity. For more information, visit www.asmbs.org.

 

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*The Long Term (15 year) Impact of Bariatric Surgery on Conversion from Pre-Diabetes to Type II Diabetes Mellitus.
John Nguyen-Lee Danville PA1, Michael Furey Dallas PA2, Craig Wood Danville PA1, Luis Pina Danville PA1, Mark Mahan Danville PA1, Ryan Horsley Scranton PA1, Benefsha Mohammad Danville PA1, Alexandra Falvo Scranton PA1, Christopher Still Danville PA1, Peter Benotti Danville NY1, Anthony Petrick Danville PA1, Vladan Obradovic Manlius NY1, David Parker Danville PA1 Geisinger Medical Center1 Geisinger Wyoming Valley (GWV)2

 

 


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