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What is the diet before gastric sleeve surgery?

This process reduces both the risks associated with surgery and facilitates the surgical process, as it reduces the size of the liver. For the preparation of surgery, all routine surgical tests are performed. Respiratory functions are evaluated. In addition, the stomach is evaluated by preoperative endoscopy for possible stomach pathologies. In addition to the relevant examinations, the opinion of the cardiology, endocrinology, chest, psychiatry, and anesthesiologist is taken for the operation. The patient is left hungry one night in advance. The patient is told what to do for the formation of a vascular clot, and blood thinners are started. A gastric sleeve surgery diet is just as important as the surgery.

Gastric Sleeve Diet Plan after the Surgery

The long-term success of surgery after gastrectomy is very associated with following the recommended diet. Solid food should not be taken for 2 weeks after surgery. The liquid Dida diet should be followed by soft juicy food. A healthy eating plan is very important after surgery. There are two main goals in nutrition after gastric sleeve surgery. Ensuring the necessary nutrient and energy requirements by keeping tissue recovery and lean tissue loss at a minimum level after surgery.

Ensuring early saturation with selected nutrients, reducing the occurrence of surgical complications such as reflux, dumping syndrome, and ensuring the continuity of weight loss. After surgery, the diet plan consists of 4 stages. 4. Along with the stage, the person goes on a diet that will last for life. According to the person’s tolerance status, the fourth stage is passed within a period of 1-1.5 months.


Clear liquids are consumed for the first 2 days after surgery. They’ll drink without carbonates, without sugar, without decaf. (Teas such as Linden, rosehip)


3 after surgery. The day begins and 14. Applicable to the day.

Total consumption of at least 1.5-2 liters of liquid should be provided daily.

You can sip 30 ml (2 tablespoons) of liquid every 15 minutes.

Clear liquids (decaffeinated unsweetened teas, herbal tea)

Protein-rich enteral products

Lactose-free milk or soy milk

Fat-free yogurt, buttermilk

Unsweetened compote juice

Drained vegetable juices and soups (spinach, purslane, chard, carrots, potatoes, zucchini)

Drained juices (apple, peach, banana, grape, apricot juice)

Full eggs can be added to the soups.

Protein powders for protein needs


15 after surgery. The day begins and 35. It goes on until the day.

1.5 – 2 lt liquid consumption and 60-80 g protein consumption are targeted every day.

30-60 ml is taken every 30 minutes and 120 ml consumption is attempted within 1-1.5 hours.

3 main 3 decoctions are planned throughout the day.


Open tea, Linden, rosehip tea

Sugar-free and grain-free compote

Freshly squeezed fruit juices with no sugar added

Blenderized fruit puree (apple, banana, peach, apricot, melon, watermelon, cherry)

Mixtures prepared with milk and fruit

Low-fat/low-fat milk, lactose-free milk, soy milk, and light buttermilk

Sugar-free pudding and milk desserts

Low-fat spreadable cheeses, such as cottage cheese, labneh, curd


Lean red meat in the form of minced meat, chicken, turkey, fish

Blenderized or drained fat-free and tomato paste soups (rice and vegetable soups with milk / minced meat/chicken, noodle, red lentil soup)

Recommended vegetable dishes in a diet with a soft consistency

Softened meat, breadcrumbs, rye, and whole wheat bread

Whole wheat, rye, oat flour

Boiled crushed dried legumes

Thoroughly crushed oilseeds (walnuts, nuts, almonds)


The continuation diet is applied to ensure the continuation of weight loss. At this stage, food consumption is tried to be provided in portions appropriate to the daily needs of the individual.

When hunger increases and more nutrients can be tolerated, averaging begins 6 weeks after surgery and continues for life.

60-90 g of protein intake and 1, 5 -2 liters of liquid consumption should be provided every day.

100 ml is consumed every 30 minutes and 200 ml is reached within 1-1.5 hours.

3 in this diet. In addition to the stage, solid foods can be consumed.

Foods that are forbidden are as follows;

All sugary, carbonated, alcoholic beverages

Brewed / dark tea and coffee

Caffeinated drinks


Ready-made juices with added sugar

Gas-producing vegetables (such as cabbage, leeks, and broccoli)

Dried legumes (can be added to the diet according to tolerance)

Ready-made soups

Very hard and fatty meats

Whole milk products

Multi-sugar and starchy desserts

Bouillon tablets


Fast food

Salad dressings

Gastric Sleeve Diet: After the Surgery in 3 Months

After this operation, 3 Main and 3 decoctions are recommended for patients. Patients can consume all kinds of food, but the biggest difference compared to the preoperative period is that the portions are reduced. If the patient acquires a healthy eating and drinking habit and keeps their portions at the recommended level, they will never experience discomfort.

Because the risk of leakage after tube stomach surgery is greater than in other operations; patients should only be fed liquid foods for the first two weeks. During the liquid nutrition period, patients are recommended protein-assisted drinks. You must take attention to the calories that you will get.

Gastric Sleeve Diet: After the Surgery in 6 Months

After the first month, it is a period of solid nutrition. We’ll start with solid foods gradually. We move forward by adding nutrients according to your digestive status, and by the end of the sixth month, we will have added all nutrients to your list. For certain success after Gastric sleeve surgery, you should follow this gradual diet. It reduces the risk of complications and you lose weight in a healthy way. In the long run, you will gain new habits to lose weight permanently and maintain your weight throughout your life.

Gastric Sleeve Diet: After the Surgery in 12 Months

During this period, patients are trained to increase the nutritional value of foods in small portions during breakfast-lunch-dinner and decoctions. Since obesity is very common with the problem of constipation after surgical operations, fiber consumption should be taken together with normal foods. A cheese omelet made with cheese, eggs, or a lean pan for breakfast meals should be preferred for lunch and dinner, such as meat, chicken, fish, vegetables, and dried fruit (without water). In intermediate meals, foods such as milk, buttermilk, fruit yogurt, decoction yogurt, kefir, and fruit with high protein content can be preferred. Do not consume foods such as tomato paste, spices, oil, lemon, acidic fruits such as oranges, tangerines, grapefruit, raw vegetables , salads, or oilseeds that remain in the stomach for a long time, unless your dietitian recommends it.


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