From what I've found on the internet, it seems the key is low-carb (under 30-50g per day maximum) to reduce the glycogen stores in the liver. Sounds like they require high Protein (70 - 120g per day) to maintain muscle mass and lose fat (especially in the stomach area). They suggest low-fat so that you stay within the calorie restriction (800-1200 per day maximum) and lose fat.

What I don't understand is why many surgeons require the bulk (or all) of the diet be in Protein shakes.

Has anyone been given a reason for this? Is it because there are often added supplements in the shakes? Maybe to get us used to eating mostly liquids in prep for the post-surgery diet?

I hate the shakes.

Thanks!

I don't know - just trying to say on the liquids until July 29 day of surgery.

Mine does not require the liquid...just the low carb, high protein. Possibly the liquid is to help with the adjustment after surgery...one less thing to get used too? It's funny I was thinking the same question and don't understand the major differences from doctor to doctor.

I had 40 carb a day and all protein I wanted. I drank the shakes also but mostly water.

I actually like mine, Optifast Strawberry!

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I have to stay at 30 grams or under of carbs and chicken and fish as far as my meat.

I can't stand the shakes. My dr said it was OK to switch to lean Proteins instead. Phew.

It is harder to measure & keep track of the nutrients / calories this way. Maybe that is why they order liquid diets?