Why does it work?

In addition to the volume restristion and the malabsorption, there are also chemical signals that are changed that involve satiety, etc. Research is being done to figure out the exacts - GLP1, GIP- feedback loops - stomach/liver/pancreas interactions - blah blah blah... (and I loved how my surgeon got all excited and drew me a diagram when we started talking about this. I felt like I was back in physiology class...)  Anyway, I know that something in my body has changed my head; for me it involves the drive for chocolate. I just don't feel the draw anymore at all. It's like being free.  I know it's not totally supratentorial since I still crave some things. But food taste changes too. Less is more. I love it!