Gastric Bypass in Turkey | Indications, results & prices 2025

What is a gastric bypass?

Gastric bypass is a type of bariatric surgery that aims to restrict the absorption of food in order to promote weight loss. Regardless of the specific technique used, this procedure is designed to reduce the size of the stomach and shorten the path food takes through the intestines in order to:

• Induce an early feeling of fullness
• Decrease caloric intake

Gastric bypass is a mixed-type procedure with primarily functional effects, as it combines both “gastric restriction” and “malabsorption.” The surgery triggers hormonal changes that reduce the patient's appetite. These changes ultimately lead to significant weight loss, potentially reaching 60 to 70% of excess body weight.

The gastric bypass technique involves creating a small gastric pouch and bypassing the final portion of the small intestine through which food normally passes.

Gastric bypass techniques

There are two different techniques used to perform gastric bypass surgery in our clinics in Turkey:

• Roux-en-Y Gastric Bypass (RYGB): This gold-standard bariatric surgery technique involves creating a small gastric pouch separated from the original stomach and connecting it to a section of the small intestine. This method significantly reduces food absorption and induces an early feeling of fullness. It is widely practiced, especially for patients with type 2 diabetes or a high BMI.
• Omega Loop Gastric Bypass (Mini-Bypass): Less invasive, this alternative simplifies the procedure by creating an elongated gastric pouch that is directly connected to the small intestine through a single anastomosis. It lowers surgical risks and reduces procedure time, while delivering comparable weight loss results. It is particularly suitable for younger patients or those with fewer comorbidities.

Since each patient is unique, our bariatric surgery experts in Turkey carry out a comprehensive medical evaluation to determine the most suitable technique for your specific condition, medical history, and weight loss goals.

Take advantage of a free teleconsultation today to determine the best gastric bypass method for your profile, with the personalized and secure support of Turquie Santé.

Get a non-binding medical opinion and receive personalized quotes from the best specialized clinics in Turkey.

When is gastric bypass surgery indicated?

Bariatric surgery, such as gastric bypass, is considered only as a last resort, after non-surgical methods such as diet, regular physical activity and medication have failed.

In Turkey, bariatric surgery specialists recommend gastric bypass in the following cases:

• Obese patients with a body mass index (BMI) over 40 for whom no medical or dietary treatment has led to weight loss.
• In patients with a BMI between 35 and 40 with serious medical conditions such as sleep apnea syndrome, type II diabetes, chronic joint pain and cardiovascular disease.
• A thorough medical evaluation is always necessary to confirm the indication for gastric bypass surgery. This will determine not only whether surgery is feasible, but above all whether it represents the best therapeutic option for each profile.

Are you wondering whether you are a good candidate for this procedure? Make an appointment today for a free teleconsultation with our partner bariatric experts in Turkey via Turquie Santé.

Preoperative phase

The success of a gastric bypass largely depends on proper preparation. This approach first requires a thorough medical and psychological evaluation of the patient.

Mental Evaluation

Gastric bypass surgery requires a long-term commitment to a healthy lifestyle. Therefore, the patient must be mentally prepared for lifestyle changes and postoperative challenges.

Psychological support can be highly valuable in helping the patient mentally prepare and manage the emotional aspects of this transformation.

Physical Evaluation

In addition to psychological support, a complete pre-surgical assessment is necessary to ensure the procedure goes smoothly. This includes a physical examination and blood tests. An endoscopic examination of the esophagus, stomach, and duodenum will also be performed to rule out any gastric and/or duodenal conditions that could contraindicate the surgery.

Multidisciplinary Preoperative Follow-Up

To maximize the chances of success and optimize postoperative recovery, the patient undergoes a multidisciplinary preoperative follow-up over a period of 6 to 12 months. This personalized program aims to:

• Define a care pathway, adjusted monthly
• Educate the patient on adopting a new lifestyle, diet, and physical activity routine
• Monitor the patient's general health condition

The goal of this program is to provide individualized support throughout the entire process. This ensures that each patient has access to all the information and assistance needed to successfully achieve both physical and mental transformation.

Advantages of gastric bypass

Among the various bariatric surgery options, gastric bypass stands out for its long-term results and significant medical benefits, often surpassing those of the gastric balloon or sleeve gastrectomy.

• Consistent and long-lasting weight loss: Patients typically lose about 50–75% of their body weight in the first year, although the rate of loss tends to slow down after 1–2 years.
• Improvement in obesity-related diseases such as diabetes, hypercholesterolemia, high blood pressure, and more.
• A 29% reduction in global mortality: cancer-related mortality decreases by 60%, and diabetes-related mortality by 90%.
• Reduced morbidity, meaning fewer health complications caused by obesity, such as lower blood pressure, cholesterol levels, blood sugar, and reduced symptoms of gastroesophageal reflux.

Complications and side effects

Gastric bypass is a high-performance but technically demanding form of bariatric surgery, which involves modifying the digestive circuit through a bypass between the stomach and the small intestine. As with any operation of this type, complications may arise, particularly in the days following the operation. The rate of complications remains relatively low (2-4%),and their management depends largely on the expertise of the medical team.

Possible complications include

• Gastric or intestinal fistulas: linked to suture disunion, these can lead to digestive leakage. These situations are rapidly managed, either by medical treatment or by re-operation.
• Internal hernias: a section of intestine can become trapped in a weakened area of the abdominal cavity, disrupting intestinal transit. In this case, corrective surgery is usually required.
• Anastomotic ulcers: these appear close to the junction between the stomach and intestine, causing pain, discomfort when eating or digestive bleeding. In most cases, treatment with medication is sufficient to resolve them.
• Gastrointestinal stenosis or obstruction: these complications can lead to nausea, vomiting or difficulty in eating. They are frequently treated by endoscopic dilatation, or even by further surgery if necessary.
• Nutritional deficiencies: Due to altered nutrient absorption, vitamin and mineral deficiencies may occur. A personalized nutritional care plan, including appropriate supplements, generally helps prevent or correct them.

Thanks to Turquie Santé, you benefit from high-level medical support in JCI-accredited clinics and hospitals or those aligned with international standards. Each procedure is performed by experienced digestive surgeons specialized in bariatric surgery and supported by multidisciplinary teams (nutritionists, anesthesiologists, specialized nurses, etc.).

Alternatives to Gastric Bypass: Which options to consider?

Gastric bypass is not the only path to sustainable weight loss. Depending on your BMI, medical history, and personal goals, other bariatric surgery options may be just as effective—or even better suited—to your specific situation. Here's a brief comparison to help you make an informed decision:

Feel free to ask all your questions during your initial teleconsultation. A dedicated medical team will take the time to listen, reassure you, and guide you toward the safest and most suitable technique for your case.

Alternatives to Gastric Bypass: Which options to consider?

After gastric bypass surgery, your digestive system enters a new phase. It becomes more sensitive and requires a gradual adaptation to a new diet, along with close monitoring to ensure weight loss is effective, long-lasting, and safe.

We recommend following a progressive eating plan, typically in 4 stages:

1. Liquid phase (1 to 2 weeks): broths, water, herbal teas, protein supplements.
2. Pureed phase (2 to 4 weeks): vegetable purees, finely minced meats.
3. Soft texture phase (weeks 4 to 6): well-cooked foods that are easy to chew.
4. Gradual return to solid foods: small meals rich in protein, low in sugars and fats.

Eat slowly, chew thoroughly, and avoid drinking during meals to prevent overstretching the gastric pouch.

Engaging in light but regular physical activity, such as walking, promotes weight loss, improves digestion, and boosts energy levels.

At the same time, psychological support can be extremely valuable in helping you accept your physical transformation, manage your emotions, and stay motivated over time.

With Turquie Santé, you benefit from comprehensive professional care. All procedures are performed in accredited clinics that meet strict international standards. Postoperative care is personalized and includes medical consultations, nutritional guidance, and both medical and psychological support.

In the event of complications, appropriate medical intervention is guaranteed with reinforced safety protocols.

Turquie Santé is committed to supporting you every step of the way, ensuring that your transformation is safe and carried out with complete confidence.