Pre-Op Bariatric Diet

Hi! We are the ALO Bariatric’s nutritionist, we’ll be helping you in all nutrition-related concerns you have in your journey through bariatric surgery. The pre-op diet consist in two stages, the first one is high protein and low carbs and fats, and the second one consist in clear liquids only. You will need to be on the pre-op diet starting few days prior to surgery (depending on your BMI), which consist of 2 or 3 protein shakes per day, and once a day a serving of chicken, fish or egg whites plus a nice crunchy salad with low fat or fat free dressing. You want a good protein shake that is basically high in protein (containing at least 20 grams of protein per serving, and prefer a free or low in fat and carbs one). You can mix the powder protein with half water and half skim milk or almond milk. If you still feel hungry, is ok to have a smaller portion of vegetables, (i.e. cucumber, zucchini). Then a few days prior to surgery (depending on your BMI) start your clear liquid diet consisting of: water, teas, broths, clear juices, Jell-o and popsicles. During this days, You can also mix your powder protein with water only (this will help you to control the hunger).

Download PDF File with Complete Diet

Pre-Op Complete Diet Open and download PDF file with complete Pre-Op Bariatric Surgery Information. Click here to download file

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Download PDF File with Complete Manual

Medications and Surgical Symptoms Includes some details about pre op medications and possible post surgical symptoms. Click here to download file

How many days should I follow the PRE-OPERATORY & CLEAR LIQUID diet?

  • If BMI is <34. Follow the diet 5 days. Start the pre-Operatory diet 5 days prior to surgery. And start the Clear Liquid diet 3 days prior to surgery. (2 days first stage and 3 days clear liquid stage)
  • If BMI is 35-40. Follow the diet 10 days. Start the pre-Operatory diet 10 days prior to surgery. And start the Clear Liquid diet 3 days prior to surgery. (7 days first stage and 3 days clear liquid stage)
  • If BMI is >40. Follow the diet 14 days. Start the pre-Operatory diet 14 days prior to surgery. And start the Clear Liquid diet 5 days prior to surgery. (9 days first stage and 5 days clear liquid stage)
  • If BMI is >45. Follow the diet 15 days. Start the pre-Operatory diet 15 days prior to surgery. And start the Clear Liquid diet 8 days prior to surgery. (7 days first stage and 8 days clear liquid stage)
  • If BMI is >50. Follow the diet 20 days. Start the pre-Operatory diet 20 days prior to surgery. And start the Clear Liquid diet 10 days prior to surgery. (10 days first stage and 10 days clear liquid stage)
  • If BMI is >60. Follow the diet 30 days. Start the pre-Operatory diet 30 days prior to surgery. And start the Clear Liquid diet 10 days prior to surgery. (20 days first stage and 10 days clear liquid stage)
  • If BMI is >70. Follow the diet 40 days. Start the pre-Operatory diet 40 days prior to surgery. And start the Clear Liquid diet 10 days prior to surgery. (30 days first stage and 10 days clear liquid stage)
  • If BMI is >80. Follow the diet 60 days. Start the pre-Operatory diet 60 days prior to surgery. And start the Clear Liquid diet 20 days prior to surgery. (40 days first stage and 20 days clear liquid stage)

You can also join our private FB Support Group where you will receive nutrition information, and support from other members and the nutritionist. https://www.facebook.com/groups/BariatricSurgeriesSupport/

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