How safe is Bariatric surgery?
JAN 28, 2026With advancements in minimally invasive surgical techniques and the steps we take to prepare patients for an operation, bariatric surgery is more safe and less invasive than ever before.
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Bariatric surgery has been found to be the most reliable approach to achieving weight loss for those with severe obesity (BMI>35) associated with medical problems and morbid obesity (BMI > 40). That doesn’t mean it’s a shortcut or a simple way to achieve weight loss; it requires a lifelong commitment to lifestyle changes.
For that reason, it’s important to give the different types of bariatric surgery careful consideration. Each is simply a tool you can use to achieve your weight loss goals.
Some procedures apply both restriction and malabsorption, and some only restrict calories. Each type of bariatric surgery has pros and cons, which are summarized below.
This minimally invasive surgery decreases the size of the stomach to about the size of a small egg. This decreases the amount of food the stomach can hold, which will trigger fullness. The smaller stomach is connected directly to the middle portion of the small intestine; it bypasses the rest of the stomach and upper portion of the small intestine. This reduces the amount of calories being absorbed. The stomach continues to function, sending enzymes and digestive juices into the small bowel.
With this laparoscopic surgery, a small, sleeve-shaped stomach, about the size of a banana, is created by cutting, stapling and removing a large portion of excess stomach. The size (15% of normal stomach) restricts the amount of food and calories that can be consumed. The procedure also eliminates a part of the stomach that produces the hormone that stimulates hunger (Ghrelin). The remaining stomach and intestines function normally otherwise, preventing malabsorption of nutrients.
This laparoscopic procedure involves placing a band around the upper most part of the stomach, partitioning the stomach into one small and one large portion. The smaller-sized portion limits food consumed as patients feel full faster, but does not interfere with food absorption. A port is placed under the skin of the abdomen which allows the band to be adjusted to make it larger or smaller as needed.
This procedure, one of the most complicated of the bariatric surgeries, combines a sleeve gastrectomy with a bypass of two-thirds of the small intestine. The result is a calorie restriction and malabsorption for enhanced weight loss. The duodenal switch was once universally denied by insurance companies but is increasingly being covered.
Find out if your weight puts you at risk for health issues today.
Consult with our bariatrics team about if insurance covers bariatric surgeries, or about MD Save options through CHI Health.
With advancements in minimally invasive surgical techniques and the steps we take to prepare patients for an operation, bariatric surgery is more safe and less invasive than ever before.
Read More
While BMI can be a useful screening tool for populations, relying solely on this single number to define an individual's health and dictate weight management strategies is outdated and often misleading.
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Let's debunk some of the most common misconceptions about bariatric surgery and illuminate who it's truly designed to help.
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