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Dr.Weight // BEFORE and AFTER bariatric operation - practical guidelines // Some groups of food products that could be eaten after the operation

Some groups of food products that could be eaten after the operation

Bariatric Surgery - – 2008

Some groups of food products that could be eaten after the operation

After the operation your appetite will diminish considerably: your organism will need only a tenth of what you used to eat. Remember this, because your new stomach will resist overeating.

To maintain your health and gradual weight reduction, your diet should include 5 groups of food products:

  1. Protein, 6 portions per day. Minimum daily protein consumption is 50 g for women and 63 g for men. You should therefore eat at least 150 g of lean meat, poultry or fish a day.
  2. Vegetables, 2 portions per day, for vitamins, minerals and fibre.
  3. Fruit, 2 portions per day, for vitamins, minerals and fibre.
  4. Starch-containing food, 2 portions per day, for vitamins, minerals and fibre.
  5. Oil-containing food, 3 portions per day, for skin health and prevention of gallstones.


Milk and dairy foods:

1 cup 1% milk

1 cup low-fat yoghurt without sugar

1 cup low-fat kefir without sugar

Meat and other protein food:

70g veal, cooked as a rissole (without other ingredients)

30g meat prepared with a blender (for example chicken, turkey, beef, veal, fish)

30g tinned salmon or tuna

½ egg

¼ cup cottage cheese

30g cheese

¼ cup ground legumes (possibly as a soup)


½ cup vegetable juice (tomato or carrot)

1/3 cup ground vegetables, e.g., beet, carrot, green peas or haricots, spinach, broccoli, greens, zucchini, cauliflower.


½ cup fresh fruit juice, without sugar, mixed in equal parts with water

1/3 cup fruit (fresh, tinned in water or frozen) prepared with blender, without sugar.

Starch-containing food:

1 cup potato soup (not too thick or creamy, as this could provoke dumping-syndrome in gastric bypass patients).

½ cup cooked cereal without sugar (semolina, porridge etc.).

Vegetables containing starch: 1/3 cup cereal mixture, potato, beans or peas.


Mix with meat or vegetables.

1 teaspoon olive or sunflower oil, 1 teaspoon mayonnaise and/or 1 tablespoon sour cream.

Be doubly sure to eat sufficient protein. Protein deficiency impairs immunity, makes the organism prone to infections, impairs the healing of the surgical wound, and decreases muscle strength. Moreover, protein deficiency slows weight loss.

The table of food products with high protein content

Food product and its amount

Protein quantity in gramms

Diary products

Ѕ cup low-fat cottage-cheese


100g low-fat cottage-cheese


1 cup 1% milk


Vegetarian menu

1 cup soya soup


1 cup light yoghurt with sugar substitute


30g hard cheese


Ѕ cup beans or peas


Ѕ cup soya beans


Ѕ cup lentils


2 tablespoons peanut oil



120g boiled chicken


100g turkey


Fish and sea-food

Ѕ cup boiled tuna


Ѕ cup boiled salmon


30 g fresh or tinned shrimps, crab or mussels



30g lean pork


30g lean veal


30g lean ham



1 large chicken egg


ј cup whipped egg white


ј cup whipped egg white with cheese



Ѕ cup clean chicken soup with pasta


Soup of 15 g fried beans


Ѕ cup ground peas


Frozen food:

Try not to add more than 10g of oil while cooking.

Protein supplements:

It might be necessary to eat extra protein only during the first few months after the operation. If your lab tests indicate a low protein level you should take protein supplements, which can be added to vegetables and fruit. These are available from any sport or health food shop.

Protein powder may be added to:

  • milk
  • soup, meat, fish and potato dishes
  • hot chocolate without sugar
  • 1 teaspoon of instant coffee

In addition, vanilla-flavoured protein powder can be mixed with sugar-free fruit juice or used to make a pudding.