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After surgery

Transitional diet after surgery

1-14 days after the operation: only liquid or pureed food, 2-3 tablespoons at a time every 1-1.5 hours. There are no restrictions on ingredients, but we recommend pureed meat, cottage cheese and other protein-rich foods. You should drink at least 1,200 ml per day, and in hot weather, 2,000 ml a day. Drink one sip at a time and frequently – up to 200 ml per hour. After eating, wait 20 minutes before drinking.

15-30 days after the operation: Besides pureed food, eat soft food or food that has been chopped into small pieces (such as sauces with minced meat, stewed vegetables, soups and chicken and fish), but these must be chewed thoroughly before being swallowed. Eat 4-6 times a day, gauging how you feel (i.e. until you feel full), usually 70-100ml at one sitting.

More than 30 days after the operation: At this point, we advise switching away from liquids and pureed foods and consuming more solids. You should eat 4-6 times a day — slowly, and chewing very thoroughly. It is not advisable to drink liquids with your meals. Rather, drink 20 minutes after eating. Your daily protein consumption should be a minimum of 80 grams. Protein-rich foods include meat, fish, dairy products such as cottage cheese, and eggs. For instance 180 g of beef contains 80 g of pure protein.

Supplemental vitamin therapy

All patients undergoing surgery are advised to take multivitamins and minerals for the rest of their lives in order to compensate for possible decreased consumption and absorption of food after surgery. Restrictive operations (gastric band and gastric sleeve resection, laparoscopic gastric sleeve resection, laparoscopic gastric plication, laparoscopic gastric banding): patients should consume at least 100% the recommended daily allowance. The daily dose of multivitamins should contain at least 0.4 mg of folic acid, 18 mg of iron, zinc and selenium.

Bypass operation patients (e.g., laparoscopic gastric bypass) should consume at least 200% of the recommended daily allowance. The daily dose of multivitamins should contain at least 0.4 mg of folic acid, selenium, zinc and 36 mg of iron. In addition, patients should take a daily dose of 400-800 IU of vitamin D, 200-350 mcg of vitamin B12, and 1200-2000mg of calcium citrate. If the patient suffers from iron deficiency anaemia or has ever suffered from it in the past, he or she should take 100-200 mg of iron supplements (such as iron sulphate). Alcohol. Studies have found that bariatric surgery patients, especially patients who undergo a gastric bypass, have a higher risk of developing alcohol dependency.

Pregnancy after surgery

Women are advised against becoming pregnant for 18 months after surgery. After that point, monitoring of folic acid and other vitamins and microelements is essential; if necessary, supplements should be taken.

Co-existing diseases

In the case of all operations, remember that significant changes in the course of concomitant diseases could take place and this could necessitate material treatment (diabetes in particular). For this reason, we advise telling your family doctor or specialist immediately that you have undergone such surgery.

Weight gain

Take into consideration that a certain amount of relapse may occur after the initial weight loss (a 5-10% weight gain over 1.5-2 years of the surgery is completely normal and should not be cause for alarm, further weight gain is unlikely and would require consultation with a surgeon or dietician).

Follow-up and lab work

In the first year after the operation, the frequency of visits to the doctor and blood work will be determined by the operating surgeon based on the specific operation and the patient (a visit to the surgeon including objective examination and blood work should be made at least twice in the first year, for instance at the 2-3 month and 12-month mark. Some procedures (such as gastric band) may require more frequent examinations by the surgeon.

  • full blood count
  • glucose, HbA1c (for diabetics)
  • liver function indicators (alkaline phosphatase, bilirubin, Y-GT, ASAT,ALAT)
  • kidney function (creatinine, urea)
  • vitamin B12, vitamin D3 25 (OH), folic acid
  • parathormone, Ca, iCa, Na, K
  • ferritin, iron
  • albumin, total protein

Physical activity

Regular physical activity after surgery has numerous health benefits, helping to increase weight loss and keep it off. Try to take a brisk 30-minute walk six days a week or walk at least 10,000 steps each day (using a pedometer).




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