Lose Weight with Gastric Bypass | UnityPoint Health

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Gastric Bypass 

Roux-en-Y Gastric Bypass Procedure

Roux-en-Y gastric bypass is one of the most frequently performed weight loss procedures in the United States. The procedure works to reduce the capacity of the stomach by dividing the upper end of the stomach, creating a smaller stomach pouch. The small intestine is then attached to the pouch, allowing food to bypass the lower stomach and segments of the small intestine. When completed, a direct connection from the stomach to the lower segment of the small intestine exists, allowing food to bypass portions of the digestive tract that absorb calories.

Weight Loss with Gastric Bypass

The goal of gastric bypass is to restrict the intake of food and slow the speed with which food leaves the stomach. The weight loss with Roux-en-Y gastric bypass is typically rapid after this surgery, with most patients losing their expected weight within 12-18 months. One year after surgery, weight loss can average 70 percent of excess body weight. After 10 to 14 years, many patients have maintained 50 to 60 percent of their excess weight loss.

Weight loss with gastric bypass is greater for patients who start at a heavier weight prior to surgery as compared to a laparoscopic adjustable gastric band.

Benefits of Gastric Bypass

The Roux-en-Y gastric bypass procedure has fewer risks than other bypass procedures that involve removal of the stomach and major complications are not common. Additionally, malabsorptive weight loss surgeries like Roux-en-Y have been shown to be more effective in reversing health conditions associated with obesity and lead to more weight loss than restrictive surgeries.

Gastric bypass also has a rapid resolution of comorbidities, such as diabetes, which may resolve within weeks to months. Click here to learn more.