I am scheduled for my surgery on Sept. 21. I was told to get on a protein shake diet week before my surgery an drink lots of water. Okay,well I am like a eating everything in sight as though I will never eat anything again for the rest of my life. What is up with that? Did anyone else have these feelings? I read somewhere here that this type of feeling is common, I'd like to know how to turn this off. It could be a hormone surge, it feels like "oh, I'm feeling low blood sugar, I need to eat" LOL