So I see that some people are two week liquid diet and some are one week prior to surgery. What is the reason behind this? Does it just depend on the surgeon?

I think my surgeon may consider size of abdomen. I have a 42 BMI and have to do a three week 20 carb, low fat liver shrinking pre-opt diet.

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Mine is based on BMI for the length of the pre-op diet but the content is the same. 2 Protein shakes per day and one meal consisting of a lean meat or protein and veggies. Clear Liquids the day before surgery. Not too hard but miss my coffee with French vanilla creamer.

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I was told by nutritionist that depends of your BMI.

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....and the purpose of shrinking your liver is primarily two-fold. First, it's beneficial to try and reduce the fat around your belly and liver prior to surgery. Your liver is located very near to your stomach, and a too large and/or fatty liver can cause your surgery to be delayed, or possibly be performed as an open procedure, which has a higher complication rate. Also your liver and spleen are surrounded by little things called triglycerides, and by reducing them prior to surgery, you're also potentially reducing the likelihood of complications and recovery issues. With that being said, I'm not a doctor... nor do I play one on TV. But I did read a whole lot before my WLS, and I ask a ton of questions

This quote reminded me of this picture .

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Thanks for the info. I'm trying. I have just 2 days of liquids before surgery.At the moment 9 oz of Protein , salads. Not sure how much all together for the day. I guess will be calling nutritionist tomorrow morning.

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It's sort of fascinating how different each programs' pre-surgery diets are.

My friend in CT didn't have to do much of anything except for clear liquids 48 hours before surgery.

For me, at DHMC in NH, I have 2 weeks of 1000 cal/day, very low carb, but real food is fine.

Reading every other possible combo on these forums. I wonder why that hasn't become more standardized across the industry yet.