Frequently Asked Questions (FAQ)


Sleeve gastrectomy (weight loss surgery) is a complex surgery that should only be performed by a highly-skilled surgeon and surgical team. Patients considering the sleeve gastrectomy must be well-informed about the procedure and what to expect after the surgery to achieve a successful result since the aftercare plan and lifestyle changes are just as important as the procedure itself. Please read frequently asked questions and if you have any other questions, do not hesitate to get in touch with us.



Is the sleeve gastrectomy surgery necessary?

Gastric sleeve surgery is necessary for people living with obesity to have a healthier and quality life in cases where diet and exercise do not work. It is also important in treating the fatal risks of obesity.

What are the benefits of sleeve gastrectomy?

Gastric sleeve surgery treats obesity that negatively affects a person’s life and can have fatal consequences. In addition, it provides a healthy and longer life to the person by treating the concomitant diseases of obesity. In addition, it provides both psychological and physical recovery.

Why is the sleeve gastrectomy effective in losing weight?

Since most of the stomach is removed with Gastric sleeve surgery, the person eats much less and gets full early. This allows the person to lose weight quickly.

What is the relationship between gastric sleeve surgery and the digestive system?

Digestion takes place in the mouth, stomach, and intestines, respectively. Since sleeve gastrectomy is a surgical intervention on the stomach, it is directly related to the digestive system. Thanks to mechanical reduction, a saturation signal is transmitted to the brain with much fewer nutrients and active weight loss is achieved.

Does gastric sleeve surgery harm the digestive system?

Gastric sleeve surgery gives successful results when it is performed under qualified conditions, by a specialist doctor and a well-equipped health center. It does not cause any harm to the digestive system.

How long does sleeve gastrectomy take?

Gastric sleeve surgeries take an average of 45 minutes.

Who is suitable to have a gastric sleeve surgery?

Gastric sleeve surgery is performed over a certain weight. In this calculation, height and weight are evaluated together. In addition, other comorbidities such as diabetes, blood pressure problems are also effective in evaluation. It is necessary to make a personal evaluation.

Who cannot have gastric sleeve surgery?

Gastric sleeve surgery is performed over a certain weight. In this calculation, height and weight are evaluated together. In addition, other comorbidities such as diabetes, blood pressure are also effective in evaluation. However, a young age range and some diseases such as schizophrenia and type 1 diabetes are obstacles to having the surgery. It is necessary to make a personal evaluation.

What is body mass index?

It can be calculated by dividing the person’s body mass in kilograms by the square of their body length in meters.

Example: Height: 1,60 m

                 Weight: 50

Body Mass Index: 50 / 1,60×1,60

This calculation gives us an idea about the fat rate and body fat.

What are the limits of body mass index for gastric sleeve surgery?

The body mass index limit is 35. However, for those with concomitant diseases such as type 2 diabetes, metabolic syndrome, etc., and those who have failed weight-loss attempts before, if the body mass index is over 30 then the person may undergo a gastric sleeve surgery.

What are the problems that may occur after sleeve gastrectomy?

After the surgery, problems such as changes in bowel habits, insufficient weight loss, problems due to insufficient fluid or salt intake, formation of stone-mud in the gallbladder following losing weight, the occurrence of hernia in the operation sites, psychological problems and depression, and deficiency in some vitamins and minerals may occur. Therefore, postoperative follow-up is crucial.

What are the complications after sleeve gastrectomy?

The first 3 weeks after the surgery are important and most of the complications can be experienced during this period. Complications that may occur in the short term such as leakage from the staple line, life-threatening risk (0.2-0.5%), bleeding on the operation area (1%), skin incision infection, infection in the abdomen, clot formation in the leg veins-thromboembolism (1% ), lung infection and respiratory problems, abnormal heart rhythm, urinary tract infection, constipation, mild hair loss due to protein intake.

Although it is rarely seen after sleeve gastrectomy, vitamin B, iron, folic acid and vitamin D deficiency may develop.

What are the risks of sleeve gastrectomy?

Gastric sleeve surgery is a low-to-medium risk surgery. Complications may occur in sleeve gastrectomy, as in any surgery. The most serious complication that can be seen after sleeve gastrectomy is leakage from the remaining part of the stomach into the abdominal cavity. There is a slight possibility of bleeding from the cut stomach line into the stomach or into the abdomen in the early period. Postoperative thromboembolism, lung infection and wound infection are other risks that may occur. Vitamin and mineral deficiencies can be seen in the first 1 month period.

Is weight loss surgery dangerous?

Some risks can be seen in sleeve gastrectomy, as in any surgery. These may result from surgical complications and lack of follow-up. However, these rates are very low compared to many surgeries. At experienced centers, the risks are close to zero.

What are the harms of gastric sleeve surgery?

There is no known long-term harm of gastric sleeve surgery. Patients with sleeve gastrectomy should be carefully followed up by a professional team in terms of nutrition.

What is the mortality rate in sleeve gastrectomy surgery?

Operation-related life-threatening risk is reported to be around 3 per thousand (0.2% – 0.5%). The death rate is one in a thousand. This is a very low rate compared to many types of surgery. One of the most important factors here is whether the surgeon who performs the operation is experienced and expert of this surgery. At experienced centers, this rate is zero.

Will there be any leakage after the sleeve gastrectomy?

Leakage may occur for different reasons after the sleeve gastrectomy. Please read the subtexts for detailed information about the leak.

Why would there be a leak after some sleeve gastrectomy surgeries?

Postoperative leak development may be due to doctor’s mistake, nutritional violations, technical problems and insufficient tissue nutrition.

What are the symptoms of leakage after the sleeve gastrectomy?

In case of postoperative leakage, general condition disorder, especially pain in the upper part of the stomach, fever, pain on left shoulder and back pain can be seen. There are more cases with only fever without abdominal pain. Symptoms such as nausea and vomiting, weakness, palpitations can also be signs of leakage.

Is leak test done during and after sleeve gastrectomy and how is the leak test done?

During the operation, methylene blue is sent into the stomach to create pressure and the line is checked visually. One day after the operation, a radiopaque liquid is taken orally and in radiology, fluoroscopy or x-ray is taken to check whether there is any leakage in the stomach.

How is leakage treatment done after the sleeve gastrectomy if it occurs?

After the sleeve gastrectomy, the treatment of leakage should be made by expert surgeons in bariatric surgery. Leakage is a risk for the first three weeks after the surgery and has no chance of occurring later. Leakage treatment after sleeve gastrectomy is shaped according to criteria such as the general condition of the patient, whether the patient has sepsis, the amount of leakage, and the time of the leakage. The early diagnosis and early initiation of treatment are important. If the leakage develops, one or more methods such as re-operation, drainage, endoscopic stent insertion, nasojejunal tube, antibiotic treatment can be applied.

Does sleeve gastrectomy cause cancer or increase the risk?

Bariatric surgery does not cause cancer. Bariatric surgery does not increase the risk of cancer. On the contrary, it reduces the risk of cancer. It is helpful and preventive in the treatment of obesity-related cancer types. It is curative and preventive for cancer types caused by obesity in the long term.


Do diseases such as asthma and blood pressure prevent weight loss surgery?

These diseases are not an obstacle to surgery. These are the diseases caused by obesity. With the surgery, healing improvement is seen.

Which side conditions does gastric sleeve surgery treat?

Surgery treats comorbidities such as sleep apnea, type 2 diabetes, high blood pressure, stroke risk, liver diseases, some types of cancer, joint pain, and heart attack.

Can weight loss surgery cure diabetes?

Improvement was observed in diabetic patients after surgery. Many patients can stop using insulin and other diabetes medications.

Is sleeve gastrectomy a treatment for type 2 diabetes?

While obesity is eliminated by sleeve gastrectomy surgery, the damages due to type 2 diabetes are also eliminated. Type 2 diabetes’s healing improves with weight loss.

What is the reason why sleeve gastrectomy ends diabetes?

There is an increase in the secretion of the hormone called GLP-1, which is released from the intestine with surgery. In addition, since the GLP-1 hormone eliminates insulin resistance in the liver, muscles and adipose tissue, it has been observed that the patients start to heal in a short time even before starting to lose weight and getting rid of diabetes. In addition, diabetes starts healing with a correct and balanced diet.

Will sleep apnea improve after weight loss surgery?

After surgery, sleep apnea heals quickly. In addition, significant improvement is observed in other lung diseases.

Will I experience insomnia after the sleeve gastrectomy?

Since the surgery eliminates the sleep apnea problem, you will sleep in a night of more comfortable and qualified sleep. There is no insomnia problem.


How is the hunger situation after the sleeve gastrectomy?

The feeling of hunger is not felt in the first months because the fundus of the stomach, which produces hunger hormone, is removed surgically. However, between the 9th month and the 2nd year, the feeling of hunger comes back.

Is a continuous diet applied after the sleeve gastrectomy?

A special diet that transforms from liquid to solid is applied in the first month after the surgery. Later, the person needs to gain healthy eating habits in his/her life. Since high-calorie foods and unhealthy foods will cause weight gain again, the person should continue his/her life with a healthy nutrition program. Therefore, postoperative support should be available. Especially the calorie calculation and the nutrition program supported by sports will increase the success.

When do I start to lose weight and how fast can I lose weight after the sleeve gastrectomy?

With the sleeve gastrectomy, you start to lose weight from the first month. The ideal weight is reached quickly compared to diet and other methods. A rapid weight loss is experienced in the first 18 months after the surgery. However, you will experience the fastest weight loss process in the first 6 months. Then, weight loss continues until the ideal weight is reached.

How much weight can I lose with sleeve gastrectomy?

It is aimed to lose 10-15% weight in the first month after the sleeve gastrectomy. In the following months, the ideal weight is reached within months by decreasing 8% and gradually. In total, 90% of your excess weight will be gone within the first year.

Will there be pain after sleeve gastrectomy?

Due to the fact that it is a laparoscopic (closed) surgery, there is no pain at a level that will reduce the quality of life. It is normal to observe mild to moderate pain for the first 6-8 hours after the operation; however, pain is minimal in laparoscopic procedures.

How long will pain be gone after the sleeve gastrectomy?

The pain will be gone on the second day after the operation. Pain relieves on the first day with painkillers. In addition, some people may have low-level gas pains in the first week. Again, under the supervision of a doctor, the pain of the person is relieved with painkillers.

Is smoking, coffee and alcohol usage risky after the sleeve gastrectomy?

Smoking is not recommended for the first 10 days after the surgery, and alcohol and coffee usage for the first month are not suggested.

When can one take a shower after the sleeve gastrectomy?

If the dressed area is closed in a waterproof manner after the operation, the shower can be taken from the first day.

When can I stand up after the sleeve gastrectomy?

2-4 hours after the operation you can easily stand up.

When can I start working after the sleeve gastrectomy?

The process of standing up after the operation is very fast. When you are discharged, you can return to work immediately if you are working at a desk, or within 2-3 weeks if you are working in jobs that require physical activity.

When can I take the flight after the sleeve gastrectomy?

You can travel by plane on the fourth postoperative day. If a long journey exceeding two hours is to be made in the first month, it is necessary to wear anti-embolism socks or blood thinners during the trip.

When can a vehicle be used after sleeve gastrectomy?

There is no harm in driving after the first week after the surgery.

When can I start to exercise after the sleeve gastrectomy?

Regular low-paced walking can be done after the operation. Light exercises can be started after an average of one month. From the 45th day, it can be continued with muscle-strengthening exercises by gradually increasing weight and density.

Can sexual intercourse be done after the sleeve gastrectomy?

There is no harm in having sexual intercourse after 2 weeks after the operation. However, it is necessary to avoid strokes and very intense movements to the abdominal area.

Is it risky to lift weights after the sleeve gastrectomy?

In the first 15 days after the surgery, it is inconvenient to lift heavy in order not to increase the intraabdominal pressure. From the 45th day, there is no harm in lifting weights.

What causes chills after sleeve gastrectomy?

With the surgery, the person loses weight quickly and the fat ratio in his/her body decreases. Fat in the body creates isolation against cold. In addition, the more body mass, the more energy is spent. This energy causes the body to heat up. Fat loss due to weight loss causes the fat around the body to decrease and produce less energy after the surgery. This causes cold in people who have surgery. This process returns to normal after 12-18 months.

Which vitamins are supplemented after sleeve gastrectomy?

Food consumption decreases due to the shrinkage of the stomach after the surgery. However, certain vitamins and minerals may decrease in the first month. In particular, Vitamin B12, multi-vitamins, calcium, and iron may be required. However, it is not necessary to use vitamins for life after sleeve gastrectomy. Nevertheless, the doctor determines the vitamins to be taken according to the need.


How often should the medical examinations be performed after sleeve gastrectomy?

Blood checks are required on the 1st month, 2nd month, 3rd month, 6th month and 12th month and after the surgery. Other follow-ups can be done online.

Is gaining weight again after sleeve gastrectomy possible?

If the person does not follow the diet and exercise program after the surgery, if he/she continues his/her preoperative nutrition and unhealthy life habits, he/she can regain the weight he/she has lost. However, it is very unlikely to return to old weight for the individual. Therefore, patients should be followed up by a professional nutrition team for a long time.

Does the stomach enlarge again after sleeve gastrectomy?

It is normal to have a certain amount of enlargement in the stomach after sleeve gastrectomy and it is necessary to keep weight loss at the ideal weight. However, in order to prevent excessive enlargement of the stomach, attention should be paid to nutrition programs and diet programs should be followed regularly. Thanks to the maintenance of correct eating habits, even if the stomach enlarges, healthy life can be continued.

When does weight loss stop after sleeve gastrectomy?

The goal of losing weight is to reach the ideal weight. It is aimed to reach the ideal weight of the person in the first 12-18 months after the operation. Again, exercise and diet programs, comorbidities, gender, etc. can affect this period. As the person approaches to achieve the ideal weight for him/her, weight loss slows down and when the person reaches his/her ideal weight, weight loss stops.

Is it possible to return to previous weight after sleeve gastrectomy?

Surgery allows the person to lose weight quickly. However, in order not to regain excessive weight, the person should apply a healthy diet and exercise programs. If the person returns to his/her previous unhealthy habits, it is possible for him/her to gain weight, although not as much as before.

What should be considered after sleeve gastrectomy?

Nutrition and exercise programs must be followed.

Routine checks should not be skipped.

The individual should be psychologically strong and support should be obtained if necessary.

All recommendations of the doctor should be followed.

In the long run, a healthy diet and lifestyle habits should be adapted.

Are stitches applied during sleeve gastrectomy?

Aesthetic stitches are applied with small incisions made on the body during the operation.

When are the stitches removed after sleeve gastrectomy?

Aesthetic stitches are applied with small incisions made during surgery. Aesthetic stitches are not removed, they are absorbed by the body and disappear.

When will the stitches heal after sleeve gastrectomy?

Post-operative recovery may vary from person to person. Within a week, the wounds are completely healed. However, stitch marks disappear in 3-6 months.

Will there be any scars after sleeve gastrectomy?

Sleeve gastrectomy takes place as a laparoscopic (closed) surgery. Millimetric incisions are made to the abdominal skin and closed with an aesthetic method. Therefore, there is no disturbing appearance on the person.

How are the scars of gastric sleeve surgery?

Since sleeve gastrectomy is a closed (laparoscopic) surgery, it does not leave any scars on the person’s body. Creams that speed up the healing process are suggested. Only those with very sensitive skin may have a level of scars that will not bother them.

Will the staples used in sleeve gastrectomy go away over time?

The staples used in the surgery are titanium staplers, they are very thin and remain in the body. The body wraps them completely with healing tissue. They do not cause any harm to the body and do not beep at security gates like in airports.

Will the staples used in sleeve gastrectomy cause problems in my body?

Staples made of titanium are completely biocompatible metal and do not present any problems.

Will there be saggy skin after sleeve gastrectomy?

Since rapid weight loss is started after the surgery, skin sagging may occur. For this reason, sports and exercises to be done after surgery are very effective in minimizing sagging.

What exercises should be done after sleeve gastrectomy?

After sleeve gastrectomy, daily walks and swimming can be done for cooling. You can do brisk walking from the 30th day, and heavy physical exercises after the 45th day.

Why does weight loss stop after sleeve gastrectomy?

The more weight a person has, the more weight he/she loses. As the healthy weight is about to be achieved, weight loss slows down and then stops. This process takes place within 12-18 months. In addition, the person’s unhealthy and high-calorie diet also stops weight loss. Alcohol, high-sugar foods and drinks, sedentary life can be counted among the reasons that stop weight loss even after sleeve gastrectomy.

Can women who have sleeve gastrectomy surgery get pregnant?

After the surgery, women can get pregnant. Gastric sleeve surgery provides hormonal regulation and increases the fertility rate.

When is pregnancy after sleeve gastrectomy possible?

It is recommended to wait at least 18 months after the operation before pregnancy.

When can mothers with babies have sleeve gastrectomy?

Mothers with babies can undergo surgery at the end of the breastfeeding period, and if the baby is not breastfeeding, two months after birth.

Can the baby be harmed after sleeve gastrectomy?

After 18 months after the operation, you can get pregnant and the baby will not be harmed. There would be no vitamin and mineral deficiency in the baby.