Predominantly Malabsorptive Procedures

Although these procedures reduce the size of stomach, these operations are effective and are based mainly on creating malabsorption.
It can be further divided into 2 categories:
1. Biliopancreatic Diversion:
This complex operation is also known as biliopancreatic diversion (BPD), or Scopinaro procedure. This surgery is rare now because of problems with malnourishment. It has (see more on Biliopancreatic Diversion)

2. Jejuno-Ileal Bypass:
Jejuno-ileal (JI) bypass is an obsolete bariatric surgery procedure. The term "jejuno-ileal" refers to two of the three parts of the small intestine. The jejunum is (see more on Jejuno-Ileal Bypass)