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The duodenal switch (BPD/DS) is the most powerful bariatric operation. It combines a sleeve gastrectomy with a significant intestinal bypass, producing the greatest, most durable weight loss and a very strong effect on type 2 diabetes. It is reserved for severe obesity and requires strict lifelong nutritional follow-up.
The duodenal switch (BPD/DS) is the most powerful bariatric operation. It combines a sleeve gastrectomy with a significant intestinal bypass, producing the greatest, most durable weight loss and a very strong effect on type 2 diabetes. It is reserved for severe obesity and requires strict lifelong nutritional follow-up.
The most common questions about this treatment
It combines a smaller stomach with a significant intestinal bypass, so you eat less and absorb fewer calories and fats. This dual mechanism gives the largest, most durable weight loss and a very strong effect on type 2 diabetes among standard bariatric procedures.
It is more complex and carries a higher risk of nutritional deficiency, which is why it is reserved for severe obesity and requires strict lifelong supplements and monitoring. In experienced centres with good follow-up, it is performed safely.
Yes — lifelong protein and fat-soluble vitamins (A, D, E, K), plus other minerals, with regular blood tests. This is essential after a duodenal switch to prevent deficiencies, and your team provides a clear plan.
It is usually recommended for severe obesity (often BMI 50+) or advanced type 2 diabetes, in patients committed to strict follow-up. A full assessment confirms whether it is the right procedure for you.
Because it is a more complex operation, international patients usually stay about 7–10 days, covering tests, the surgery, a 3–5 night hospital stay and a post-operative check before flying home.
Explore other bariatric surgery options
The duodenal switch first creates a sleeve-shaped stomach, then reroutes a large portion of the small intestine so far fewer calories and fats are absorbed. This combination is restrictive and strongly malabsorptive, which is why it delivers the largest long-term weight loss — and why careful supplementation is essential.
The operation is performed laparoscopically in two main parts:
Assessment & preparation — thorough testing confirms you are fit for a more complex procedure.
Sleeve creation — a narrow, sleeve-shaped stomach is formed.
Intestinal bypass — a large part of the small intestine is rerouted so fewer calories and fats are absorbed.
Recovery — a 3–5 night hospital stay with close monitoring and a staged diet plan.
You may be a suitable candidate if you:
Have severe obesity (often a BMI of 50 or above)
Have advanced type 2 diabetes that needs a strong metabolic effect
Have not succeeded with other methods or bariatric procedures
Are fully committed to strict lifelong supplements and follow-up
Are healthy enough for a more complex operation
Real patient outcomes from Marmara Health Center
Hospital stay; walking early; liquid diet
Light activity; clear/full liquids
Pureed then soft foods; protein focus
Solid foods; lifelong supplements and monitoring
The duodenal switch produces the greatest long-term weight loss of the common bariatric procedures, but results depend on strict adherence to protein, supplement and follow-up plans.
The duodenal switch is the most complex bariatric procedure and carries the highest risk of nutritional deficiency, so lifelong supplements (protein and fat-soluble vitamins A, D, E and K) and regular blood monitoring are essential. Other possible risks include leak, bleeding, infection, blood clots and more frequent or looser bowel movements. It should be done only in experienced centres with structured follow-up.
Ministry-authorised health tourism — operating under the Republic of Türkiye Ministry of Health Health Tourism Authorization Certificate and a member of Health Türkiye.
Experienced multidisciplinary team — strong academic background and a high volume of successful procedures.
Accredited partner hospital — treatment in a fully equipped, modern clinical setting.
All-inclusive care — free online consultation, VIP airport transfers, accommodation, interpreter support and follow-up.
For detailed information about our aesthetic, hair, dental and bariatric treatments, please use the contact channels below. Initial consultations for international patients can be arranged remotely via video call or WhatsApp.
