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With such a small stomach, people feel full quickly and eat less. This strategy is also called
"restrictive," because the new stomach size restricts how much food it can hold.
The surgeon disconnects the new, small stomach pouch from the majority of the stomach and first part of the small intestine (the duodenum), and then connects it to a part of the small intestine slightly farther down (the jejunum). This surgical technique is called a "Roux-en-Y."
After a Roux-en-Y, food passes directly from the stomach into the jejunum, bypassing the duodenum. This curbs your absorption of calories and nutrients. This weight loss method is called "malabsorptive."
Stomach stapling and Roux-en-Y are typically done during the same surgery and together are called a "Roux-en-Y gastric bypass." After gastric bypass surgery, people typically stay in the hospital for 2 to 3 days and return to normal activity within 2 to 3 weeks.
The risk of complications is lower at centers that do more than 100 weight loss surgeries per year.