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What is a duodenal switch or a SADIS operation?

Apart from major re-do surgery, duodenal switch (DS) and SADIS (single anastomosis duodeno-ileal switch) are the most complex operations Phoenix Health undertakes. Rather like the gastric bypass, DS and SADIS shorten the length of bowel available for food absorption, but more so. A duodenal switch leaves just 1 metre of small intestine through which you can absorb fat, with a further 2 metres above this that can absorb some carbs and protein. SADIS is a simpler modification of a DS that involves joining a loop of small intestine to the duodenum, leaving 250cm of bowel available for fat, carbs and protein absorption. The main benefit of the duodenal switch and SADIS is that they have the greatest weight loss of all bariatric procedures and the lowest chance of weight regain. Phoenix Health are one of very few surgical teams that offer DS and SADIS in the UK.


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The clinical information expressed in these video clips is for general information only, and not intended to be a substitute for a detailed discussion with your bariatric surgeon. For further information please contact one of our team on 03452 515 515 to discuss your individual case.

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