What is sleeve gastrectomy?

It is a weight loss surgery that gained remarkable popularity recently.

This procedure limits the food intake by reducing the capacity of stomach approximately by 75-80% in order to help long-term weight loss. Moreover, it decreases the appetite by decreasing the release ghrelin hormone, also known as the "appetite hormone”, which is responsible for provoking the feeling of hunger, and it also helps the patient to feel full earlier than usual. Because the ghrelin is mostly secreted from the removed portion of stomach.

Tüp Mide (Sleeve Gastrektomi)

How does sleeve gastrectomy act?

The effect is based on deactivating a substantial part of the stomach. Since your stomach will lose a major part of its capacity, it will only be able to contain a small amount of food. You will feel completely full with less food and feel less hunger during the interval between meals.

Sleeve gastrectomy also involves removal of the portion that produces ghrelin hormone, which triggers hunger. This results in decreased appetite.

Weight loss starts immediately after the surgery. It will last up to 24 months. Meanwhile, it is important to maintain a reasonable size of serving. You will not feel hungry, provided you strictly comply to the recommended diet.


Is sleeve gastrectomy a good option for me?

Sleeve gastrectomy is a good option if;

Your BMI (Body Mass Index) score is 40 or above

Your BMI score is 35 or higher and you have other medical conditions such as type 2 diabetes mellitus or hypertension

You are ready to change your lifestyle and eating habits

You tried to lose weight with diet and exercise but ended up with the same result

How sleeve gastrectomy is performed?

Patients are administered general anesthesia before the surgery. Laparoscopic technique is used and it generally takes about 1 or 1 and a half an hour. Surgery is performed by inserting surgical tools through four to five incisions, measuring 4 mm and 10 mm in length, on the abdominal skin. A guide tube is inserted into the stomach to determine how much the capacity of stomach will be reduced. Under the guidance of this tube, the stomach is incised and sutured at the same time with disposable devices called stapler. Leakage is tested, after the procedure is completed. Once verified, the excised portion of the stomach is pulled out through the incisions.

Postoperative care

You will be stay at the hospital for about 3-4 days following the surgery.

You will only be able to drink clear liquids on the first day. Next, you will switch to soft and moist foods followed by a liquid diet for several weeks and ultimately, you will add solid foods to your diet approximately four to six weeks after the surgery.

Most people may resume activities of daily life approximately 1-3 weeks after the surgery. You should consult your surgeon about when to engage in your work and start exercising.

Complications and side effects


Since it is a laparoscopic surgery, the postoperative pain will be quite low. You may vomit or feel discomfort if you eat more than the capacity of your new, small stomach. You should chew your food well, eat in smaller servings and strictly follow your diet plan.

Bleeding, embolism, pain and wound infection that are among the potential complications of any surgery also apply to this surgery, although the risk is low. Our experienced surgical team will minimize these risks by taking various preoperative and postoperative measures as well as technological opportunities. The most threatening complications of these surgeries are;

-Bleeding 0.9%

-Embolism 0.3%

-Leakage 1-2%

Your bariatric surgeon will inform you about the potential complications and side effects prior to your decision.

After sleeve gastrectomy

Diet- and eating-related expectations

Once you decide to undergo surgery, you will be advised about the necessary dietary and nutritional issues that you are expected to follow.

You will start your preoperative diet two weeks before the surgery and maintain your postoperative diet that will be modified for each phase.

Your stomach will lose its volume by about 75-80% after gastric sleeve surgery. Surgery will not only suppress your appetite, but it will also help you feel satiated with less food.

Weight loss after sleeve gastrectomy

The weight that you will lose after sleeve gastrectomy will depend on several factors, including but not limited to: Your diet, amount of exercise and your determination to change your general life style.

Patients may lose the 70-100% of the excessive weight on average in the postoperative period.

You will start losing weight as of the first day after the surgery. You may expect that the majority of the weight loss will occur in the first six months.

Once you witness the weight loss, you will be better motivated to lose more weight, eat healthily and show your amazing progression.

Losing weight may help you to be more agile and more active. Increased physical activity helps you to burn calories and lose weight.

Try to be motivated and celebrate your success in reaching your weight loss targets.

Once you achieve the optimal body weight, you should keep eating healthily to maintain your weight and avoid regaining weight.

Follow-up and support

You can attend your appointments with our bariatric team regularly. We supervise your success in losing weight and improving your health, perform tests to diagnose or rule out vitamin and mineral deficiencies, evaluate any need for support and may give you advices. We may provide you with dietary advices and tips to motivate you in your journey of weight loss.  We can also immediately detected if you are dehydrated or not.

We organize preoperative and postoperative support groups to boost behavioral awareness in patients. These groups allow patients to share their concerns, discuss them frankly, and support each other. Seminars, breakfast activities, outdoor sports activities and hiking are organized for groups at predetermined dates. We recommend you to attend these activities as much as possible.

Sleeve gastrectomy diet

If you plan to undergo sleeve gastrectomy, you should strictly follow a specific diet starting 2 weeks before the procedure. This diet aims to reduce the size and weight of your liver to facilitate the surgery. Moreover, we had observed that postoperative performance is better for patients with better compliance to the diet in the preoperative period.

Your postoperative diet will help you recover, avoid complications and adapt to your new stomach.

Success of your sleeve gastrectomy surgery will depend on your commitment to a healthy diet and lifestyle.

Our bariatric surgery team will inform you about your diet and provide support in your weight-loss journey.

Long-term postoperative dietary tips

In order to reach and maintain your weight loss targets, please follow a healthy, high-protein, low-fat, and low-calorie diet in the rest of your life.