Gastric bypass of an anastomosis (OAGB) is the third most common primary bariatric procedure worldwide. An OAGB involves the creation of a long, narrow gastric pouch that is then connected to the small intestine bypassing approximately 150 cm of the upper part of the small intestine. It takes approximately between 90 and 100 minutes to make, it is done laparoscopically. Most patients are admitted the day of surgery and can expect to go home in a day or two after surgery. It is a remarkably effective bariatric procedure with weight loss and comorbidity (such as type 2 diabetes and high blood pressure) the results are similar or even better than Roux-en-Y gastric bypass (RYGB) and slightly better than sleeve gastrectomy (SG ). Most patients can expect> 80% excess weight loss. Typically, patients reach their lowest weight around 6-12 months after bariatric surgery. It is increasingly recognized that the effects of weight loss and control of comorbidities are likely mediated by neurohormonal signals that are not yet fully understood.

Gastric bypass of an anastomosis (OAGB) is the third most common primary bariatric procedure worldwide. An OAGB involves the creation of a long, narrow gastric pouch that is then connected to the small intestine bypassing approximately 150 cm of the upper part of the small intestine. It takes approximately between 90 and 100 minutes to make, it is done laparoscopically. Most patients are admitted the day of surgery and can expect to go home in a day or two after surgery. It is a remarkably effective bariatric procedure with weight loss and comorbidity (such as type 2 diabetes and high blood pressure) the results are similar or even better than Roux-en-Y gastric bypass (RYGB) and slightly better than sleeve gastrectomy (SG) . Most patients can expect> 80% excess weight loss. Typically, patients reach their lowest weight around 6-12 months after bariatric surgery. It is increasingly recognized that the effects of weight loss and control of comorbidities are likely mediated by neurohormonal signals that are not yet fully understood.