Phase II – Bariatric Diet

Sugar-Free, Carbonation-Free, Caffeine-Free, Clear Liquids and Protein Shakes

Phase II bariatric diet may begin while you are in the hospital if you have tolerated a Phase I Bariatric Diet.  You should stay on the Phase II Bariatric Diet until 2 weeks after surgery.

Types of foods/liquids permitted:

• Any protein shake that contains at least 20 grams of protein per serving and less than 5 grams of sugar (see “Protein Shakes, Powders & Drinks”)
• The preferable protein source should be whey protein.  Soy based, egg based or a combination of whey, soy or egg may be used.
• Collagen-based protein sources should be avoided.
• You may use water, skim milk or 1% milk to mix powder-based protein shakes.
  • Recommend using lactose-free milk at first.

Types of foods/liquids NOT permitted:

Important Nutritional Considerations

• Try to drink 4 – 8 ounces (1/2 to 1 cup) of protein shake 3 times per day (breakfast, lunch and dinner – do not skip these meals)
• The goal is to consume at least 60 grams of liquid protein per day (high protein shakes)
• Do not use milk as a substitute for protein shakes (it does not provide enough protein per serving).  You can mix protein powder with milk to make a protein shake.
• Drink sugar-free, carbonation-free, caffeine-free, clear liquids in between meals
  • Try to consume a total of 64 ounces (8 cups) of fluid per day (this includes any sugar-free, non-carbonated, decaffeinated clear liquids and protein shakes)

Important Reminders

• “30-Minute Rule”:  Do not drink any clear liquids 30 minutes before or after consuming the protein shake
• Always check your tolerance level and stop drinking when full
• Avoid extreme temperatures (extreme cold or hot)
• Remember to sip slowly, do not gulp, do not use a straw
• Always remember to keep increasing physical activity as tolerated (as directed by physician)

Sample of a Phase II Bariatric Diet Menu