Stage 1 and 2 – Pre op Liquid diet and 2 week post op

Goals for the Pre op Liquid diet is to reduce the size of your liver, to make it easier for the surgeon during operation and to prepare you for the 2 week post op diet.

Your goals are to get adequate protein to help with healing after surgery and to build lean body mass. 60-70 grams of protein per day for women and about 70-80 grams for men.

* fluids – 48-64 oz per day initially after surgery. Increase to 64-96 oz per day after that

* start taking a Multivitamin (with iron for women)

* chewable calcium (citrate, since it is better absorbed by the body)

* Calories should be between 600-1000 calories per day in the post op stage

* Start keeping a food journal

Examples of acceptable sugar free full liquids include:

  • Low fat/ sugar free yogurt/ greek yogurt
  • Sugar free pops
  • Sugar free pudding/ jello
  • Decaf tea or coffee
  • Low fat strained soups (no chunks) with added protein powder
  • Crystal light/ sugar free drink mixes
  • low fat/sugar Protein drinks and mixes
  • Broth
  • Propel water/ G2 or Powerade Zero
  • low fat milk (mootopia is my favorite for those of you living in Texas, low fat, lactose free and 12g of protein per 8 oz serving)
  • in general I went by these rules (15g of protein or more per 8 oz serving, less than 5g of sugar, less than 5g of fat)

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Refried Bean Soup

Looking for recipes that would be Liquid stage friendly I remembered coming across a refried bean soup recipe one time and decided to give it a try, I modified as always to make it my own and to make it WLS friendly.

Refried Bean Soup

Refried Bean Soup


  • 32 oz Low Sodium Chicken Broth
  • 2 16 oz cans of Fat free Refried Beans
  • 1 10oz can of RO*TEL Diced Tomatoes & Green Chilies
  • 1 pack frozen diced onion, celery and carrots mix 16oz
  • 1 TBSP garlic and pepper seasoning
  • 1/2 teaspoon salt
  • 1 tablespoon olive oil


  1. Heat olive oil on medium on large stock pot
  2. Add onion, celery, and carrot to oil and saute for about 6 minutes or until onion is transparent
  3. Add Chicken Broth, RO*TEL Diced Tomatoes & Green Chilies and salt
  4. Cover pot and simmer on Medium low for about 30 minutes or until veggies are soft
  5. To make this soup suitable for the liquid stage I, blend it smooth you can do it in a blender or use an emulsion blender (stick blender) to puree the soup and strain the remaining soup.
  6. If you would like it chunkier and suitable for the soft food or pureed diet you can leave it without straining the soup.
  7. Add the Fat free Refried Beans and stir until combined.
  8. Heat through and serve.
  9. *optional as with everything WLS you can add some unflavored protein powder to this soup or even add a 1/2 cup of plain non fat green yogurt for creaminess and added protein.

Vertical sleeve gastrectomy

Vertical sleeve gastrectomy is surgery to help with weight loss. The surgeon removes a large portion of your stomach. The new, smaller stomach is about the size of a banana. It limits the amount of food you can eat by making you feel full after eating small amounts of food.

I am adding the stages after weightloss surgery that a patient usually adheres and goes through until healed. This may vary a little depending on YOUR surgeon and the program they follow.