What is Gastric Banding Surgery and How is it Performed?
Gastric Banding surgery is a surgical procedure where a special silicone band is placed around the upper part of the stomach. This band divides the stomach into two sections, creating a very small upper stomach pouch.
This allows the patient to feel full with a small amount of food. The surgery is performed laparoscopically, making it a relatively minimally invasive procedure. The band can be adjusted externally with the help of a port after the surgery, meaning its tightness or looseness can be controlled. This feature helps manage the patient’s weight loss process.
What is Gastric Sleeve (Sleeve Gastrectomy) Surgery and How is it Performed?
Sleeve Gastrectomy is a procedure where approximately 80% of the stomach is surgically removed, and the stomach is reshaped into a narrow, banana-shaped tube. The main goal of this surgery is to significantly restrict food intake and also eliminate the part of the stomach that produces hormones that control appetite.
Sleeve gastrectomy is also performed laparoscopically, which speeds up the patient’s recovery process. It is an irreversible operation, meaning the removed part of the stomach cannot be put back. This indicates that the surgery is a permanent solution.
What are the Main Working Mechanisms of These Two Surgeries?
Gastric Banding and Sleeve Gastrectomy use different mechanisms for weight loss. Gastric Banding provides a purely mechanical restriction; the small stomach pouch created by the band allows the patient to eat less.
This method does not affect nutrient absorption or the hormonal system. Sleeve Gastrectomy, on the other hand, performs both volume restriction and has a hormonal effect. Since the part of the stomach that produces the Ghrelin hormone (the hunger hormone) is removed, the patient’s appetite naturally decreases. This makes Sleeve Gastrectomy more than just a restrictive surgery.
Which Surgery Provides More Weight Loss?
According to clinical studies, Sleeve Gastrectomy generally provides more and faster weight loss compared to Gastric Banding. Patients who undergo Sleeve Gastrectomy can lose an average of 60-70% of their excess weight, while those who undergo Gastric Banding typically lose 40-50% of their excess weight. This difference is due to Sleeve Gastrectomy offering both volume restriction and hormonal effects combined. However, the long-term success of both surgeries depends on how well the patient adheres to lifestyle changes.
Is There a Difference in the Recovery Processes of the Surgeries?
Gastric Banding surgery is one of the least invasive bariatric surgery methods, and therefore the recovery process is generally faster. Patients can be discharged from the hospital sooner after the surgery and can return to their normal lives earlier. Sleeve Gastrectomy is a more comprehensive surgical procedure, so the recovery process may take a little longer. However, since both surgeries are performed laparoscopically, the hospital stay and return-to-work times are quite short.

Which Surgery Has a Lower Risk of Complications?
Gastric Banding carries a lower risk of complications during the operation, as it is the only surgery where the stomach is not cut or rearranged. However, in the long term, it has its own unique complications such as band slippage, stomach erosion, or band infection. In Sleeve Gastrectomy, there are risks of leakage or bleeding in the early stages, but these risks have significantly decreased with the advancement of surgical technology. The risks of both surgeries are closely related to the surgeon’s experience and the patient’s health status.
Which Surgery is More Suitable for Reflux Patients?
Sleeve Gastrectomy may increase reflux symptoms or cause new reflux by applying pressure to the stomach or changing its structure. For this reason, Sleeve Gastrectomy is generally not recommended for patients with severe reflux problems.
Gastric Banding can also lead to reflux as it similarly applies pressure to the stomach. However, Gastric Bypass surgery is more successful in eliminating reflux symptoms. The most suitable surgery for patients with reflux symptoms should be determined after a detailed evaluation between the doctor and the patient.
What is the Reversibility Status of the Surgeries?
Gastric Banding is the only reversible operation in bariatric surgery. If desired or in case of a complication, the band can be easily removed, and the stomach can return to its original state. Sleeve Gastrectomy, on the other hand, is irreversible. The removed part of the stomach cannot be put back. Therefore, patients need to know that this operation is a permanent decision. This makes the surgery a more lasting solution for long-term weight control.
How is Nutrient Absorption Affected After Surgery?
Neither Gastric Banding nor Sleeve Gastrectomy affects the absorption of nutrients. Both operations only restrict food intake. This means that patients undergoing these surgeries have a lower risk of vitamin and mineral deficiencies compared to malabsorptive surgeries. However, because portions are smaller, it is still important for patients to ensure they get enough nutrients and use supplements as recommended by their doctor. This makes the long-term nutritional management of Sleeve Gastrectomy and Gastric Banding easier.
Which Surgery is More Effective for Diabetes Control?
Sleeve Gastrectomy is highly effective for patients with Type 2 diabetes. The surgery not only leads to weight loss but also normalizes blood sugar levels and increases insulin sensitivity through changes in intestinal and stomach hormones. Many diabetes patients can stop their medications or reduce their doses after Sleeve Gastrectomy. Gastric Banding, on the other hand, has only an indirect effect on diabetes through weight loss and does not provide a hormonal benefit.
Is There a Difference in the Costs of the Surgeries?
Generally, Gastric Banding surgery is a lower-cost option compared to Sleeve Gastrectomy. This is because Gastric Banding surgery requires less surgical equipment and a shorter operation time. However, this cost difference is usually not very significant. Surgery prices vary depending on many factors such as the hospital’s location, the surgeon’s experience, the services included in the surgical package, and any added extras. In the long term, additional costs for band adjustments or potential complications may also arise.
Is There a Difference in the Surgery Durations?
Gastric Banding surgery generally takes less time than Sleeve Gastrectomy. A Gastric Banding operation can usually be completed in 30-60 minutes, while a Sleeve Gastrectomy can last between 45 minutes and 1.5 hours. This time difference is due to Sleeve Gastrectomy requiring the stomach to be cut and a staple line to be created. Surgery times can vary depending on the patient’s anatomy and the surgeon’s experience.
Which Surgery Has More Reliable Long-Term Results?
Sleeve Gastrectomy provides more reliable long-term results compared to Gastric Banding surgery. Gastric Banding may frequently require revision surgery in the long term due to problems such as band slippage, erosion, or insufficient weight loss.
Sleeve Gastrectomy, on the other hand, offers a more permanent solution and provides effective long-term weight control when patient adherence is good. Today, Sleeve Gastrectomy or Gastric Bypass surgeries are generally preferred over Gastric Banding.
How Do Eating Habits Change After Surgery?
Both surgeries require radical changes in patients’ eating habits. After Sleeve Gastrectomy, patients can only eat very small portions because their stomach is smaller, and they must chew solid foods very well. Gastric Banding also requires portion control, but the rules can be slightly more flexible due to the band’s adjustability. In both surgeries, adopting a healthy lifestyle and paying attention to portion control is essential.
Which Surgery Has a Higher Risk of Revision?
Gastric Banding surgery has the highest revision rate among bariatric surgery methods due to insufficient weight loss or band-related complications. Sleeve Gastrectomy may also require revision, but this is usually in cases of insufficient weight loss or weight regain. Revision surgery after a Sleeve Gastrectomy is typically performed by converting it to a Gastric Bypass and is technically more complex than a Gastric Banding revision.
Is Hair Loss Normal After Surgery?
Yes, hair loss can occur after both Sleeve Gastrectomy and Gastric Banding surgeries. The main reason for this is the body’s attempt to adapt to the rapid weight loss. Rapid weight loss can cause nutritional stress on the body, which can temporarily lead to hair loss. Hair loss usually starts within 3-6 months after surgery and stops on its own within 6-12 months. Adequate protein and vitamin intake can help reduce hair loss.
Which Surgery Has a Higher Risk of Weight Regain?
Gastric Banding surgery carries a higher risk of weight regain compared to other bariatric surgery methods. One of the main reasons for this is that the band only provides physical restriction, and patients can continue to consume high-calorie liquid or soft foods. Sleeve Gastrectomy, by also controlling appetite through hormonal changes, has a lower risk of weight regain. However, in both surgeries, if healthy eating and exercise habits are not adopted, weight regain is inevitable.
Why is Psychological Support Important After Surgery?
Bariatric surgery is not only a physical change but also a major psychological adaptation process. After both Sleeve Gastrectomy and Gastric Banding surgeries, patients need to redefine their relationship with food and adapt to a new lifestyle. Getting help from a psychologist or a support group during this process can help maintain motivation, manage emotional eating habits, and increase long-term success.
What Can Be Done for Sagging Skin After Surgery?
Since significant weight loss occurs after both Sleeve Gastrectomy and Gastric Banding surgeries, skin sagging can occur. This is usually seen in the abdomen, arms, legs, and breast areas. After weight loss has stabilized, this sagging can be corrected with lift operations (e.g., tummy tuck, arm lift). Regular exercise and adequate protein intake after surgery can help maintain skin elasticity and slightly reduce sagging.
Are the Pre-operative Preparation Processes Different?
The pre-operative preparation processes for Gastric Banding and Sleeve Gastrectomy are similar. For both surgeries, patients need to be evaluated by a surgeon, dietitian, psychologist, and an anesthesiologist.
A decision is made on whether the patient is suitable for surgery, and blood tests and other necessary checks are performed. For both surgeries, patients are asked to quit smoking and alcohol for a certain period before the surgery, and a special diet program is applied.
Which Surgery is More Effective for Obesity-Related Diseases?
Sleeve Gastrectomy is more effective than Gastric Banding in treating obesity-related comorbidities (e.g., Type 2 diabetes, hypertension, sleep apnea). The hormonal effects of Sleeve Gastrectomy can help control and even completely cure these diseases. Gastric Banding only affects these diseases indirectly, through weight loss. For patients with diabetes, in particular, Sleeve Gastrectomy or Gastric Bypass is a more suitable option.
What Are the Possible Side Effects Seen After Surgery?
After both Gastric Banding and Sleeve Gastrectomy, side effects such as nausea, vomiting, and diarrhea may occur. In Sleeve Gastrectomy, there is a risk of leakage and bleeding in the early stage, while Gastric Banding has its own unique complications such as band infection, band slippage, or erosion. Most of these side effects can be managed by adhering to the surgeon’s instructions and will decrease over time.
How Does the Surgery Affect Hormones in the Body?
Sleeve Gastrectomy has a significant hormonal effect because it removes the fundus, the part of the stomach that produces the hunger hormone Ghrelin. This leads to patients feeling less hungry after the surgery. Gastric Banding has no effect on the hormonal system; it only changes the physical structure of the stomach. This hormonal effect of Sleeve Gastrectomy provides a significant advantage in terms of weight loss and appetite control.
Which Surgery’s Technique is More Complicated?
Sleeve Gastrectomy is a more technically complicated operation than Gastric Banding. In Sleeve Gastrectomy, because a part of the stomach is removed and a staple line is created, surgical skill is more important. Gastric Banding surgery is technically simpler because it does not require cutting or rearranging the stomach. However, both surgeries require laparoscopic surgical experience.
How Do Eating and Drinking Habits Change?
Sleeve Gastrectomy requires more radical changes in eating and drinking habits. Patients must eat in very small portions, chew their food very well, and consume liquids separately from meals. Gastric Banding surgery also requires similar rules, but because the band is adjustable, the patient can manage the nutritional rules by adjusting the band. This results in Sleeve Gastrectomy imposing stricter rules on nutrition.

Which Surgery Has Easier Long-Term Follow-up?
Gastric Banding requires regular doctor visits for band adjustments, so long-term follow-up may require more effort. In Sleeve Gastrectomy, while more frequent follow-up is necessary in the first few years, the permanent nature of the surgery means that the frequency of long-term follow-up can decrease. In both surgeries, maintaining a healthy lifestyle and having regular blood tests are essential for long-term success.
How Does Alcohol Consumption Affect After Surgery?
Alcohol metabolism changes after both Sleeve Gastrectomy and Gastric Banding surgeries. Because the size of the stomach is reduced, alcohol enters the bloodstream faster, and the effect of intoxication is felt more quickly. Therefore, alcohol consumption should be severely restricted after surgery. The fact that alcohol is also high in calories and negatively affects weight loss goals is another important factor.
Which Surgery Causes Dumping Syndrome?
Dumping Syndrome is a condition that occurs when high-sugar or high-fat foods move rapidly from the stomach’s small pouch to the small intestine. Sleeve Gastrectomy or Gastric Banding surgeries do not cause this syndrome; this condition is more commonly seen in gastric bypass surgeries. Therefore, patients who undergo these surgeries do not have a risk of experiencing side effects like Dumping Syndrome.
Is There a Difference in Hospital Stay Durations?
Gastric Banding surgery is usually a same-day procedure, and patients can be discharged on the same day or the day after. Sleeve Gastrectomy, being a more comprehensive surgical procedure, usually requires patients to stay in the hospital for 2-3 nights. The length of the hospital stay is important for monitoring the success of the operation, ensuring initial recovery, and managing possible complications.
In Other Obesity-Related Conditions, Which Surgery is Preferred?
Sleeve Gastrectomy is more successful than Gastric Banding in improving obesity-related comorbidities such as sleep apnea, high blood pressure, and high cholesterol. Thanks to its hormonal effects, Sleeve Gastrectomy can help control and significantly improve the overall health of patients by addressing these diseases. Gastric Banding only affects these diseases indirectly, through weight loss.
Which Surgery Increases the Need for Nutritional Supplements?
Since neither Sleeve Gastrectomy nor Gastric Banding surgeries affect nutrient absorption, there is no need for patients to take mandatory lifelong vitamin and mineral supplements. However, there is a risk of nutritional deficiencies due to the small portions. Therefore, a multivitamin supplement may be used as recommended by the doctor. This is a great advantage compared to Gastric Bypass, which causes malabsorption.
What is the Role of the Psychologist in Surgery Selection?
Psychological support is of vital importance in both Gastric Banding and Sleeve Gastrectomy surgeries. Psychologists evaluate whether the patient is ready for the surgery, inform them about the challenges they may face in the post-operative period, and help them cope with eating disorders. In the post-operative period, they support patients in adapting to their new lifestyle and maintaining their motivation.
When Does Exercise Start After Surgery?
The post-operative recovery process requires a slow and controlled transition to exercise. After both surgeries, patients are encouraged to start with light walks within the first few days. More intense exercises can be started with the surgeon’s approval, usually 6-8 weeks after the surgery. This helps the body to heal completely and prevents potential complications.
Why is the Permanence and Reversibility of Surgeries Important?
The fact that Gastric Banding is reversible and Sleeve Gastrectomy is irreversible affects the long-term outcomes of both surgeries. Being an irreversible surgery, Sleeve Gastrectomy requires patients to adhere more strictly to lifestyle changes, which increases long-term success rates. Being reversible allows the band to be removed in case of a complication.
What are the Success Criteria for Each Surgery?
The success of both surgeries is measured not only by weight loss but also by the improvement in obesity-related comorbidities, the increase in the patient’s quality of life, and the degree of adherence to lifestyle changes. Losing more than 50% of excess weight after surgery and maintaining this weight for 5 years is considered a successful operation.
What Should Be Considered When Choosing a Surgery?
When deciding which surgery is best for you, it is important to have a detailed discussion with your surgeon and evaluate all factors (BMI, comorbidities, lifestyle, expectations, and risks). If you are looking for a more permanent solution and hormonal benefits, Sleeve Gastrectomy may be more suitable. If you want a less invasive procedure and the option of reversibility, Gastric Banding may be more suitable.