Biliopancreatic Diversion - Obesity Surgery Guide


This is a highly complex and extensive form of weight loss surgery.  Due to the complexity it is performed by experienced surgeons only and has a much stronger impact upon food absorption.  The absorption of food is also affected during a gastric bypass but this procedure has a much stronger affect than that.

What happens here is that the part of the stomach is removed to reduce the amount of food that can be consumed (restriction).  This is then followed by a rearranging of the small intestine so that it forms two sections or ‘branches’.  These separate the passage of food from bile and pancreatic juices.  The food, bile and juices only get to combine in the very last section of the small intestine.  This means that they have less time to interact which also means reduced absorption, or ‘malabsorption’.

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