Thanks for all your responses, I just looked at my paperwork and my BMI is 43.1 , i'm seeing Dr. Terry Simpson in Phoenix , AZ. He has great websites if you do a search he's all over the internet , I hd a consult with another Doctor and it just didn't feel right, Dr. Simpsons was total opposite. They did both say I ddn't need to do the pre-op diet though, even though a partient at work refered me to the other Dr. and she had to do the diet. Do you all think it might have to do with conditions people have? I'm thinking maybe it wouldn't hurt to just do it anyway??? What do you guys use as your liquids?My friend told me about some shake that her sister n law used before gastric bypass surgery , go to google and type in "all the whey". I'm getting a bit concerned about the vomiting and the bile coming up when people to to sleep. Im trying to prevent illness not get ill. I guess i'm trying to convince myself. I have an appt with my primary provider to get a referal letter for the insurance. Thats about all I need. Anyway all comments are greatly appreciated. Thanks! Sonya