Ms. carron tells the nurse that she had tried multiple diets including protein shakes, caloric reduction , high protein/low fat approaches, fad diets. She also tried orlistat and phentermine on separate occasions under a physicians monitoring , without success. After seeing the barbaric surgeon for consult, Ms. carron learns that she is a candidate for the Roux-en-Y gastric bypass procedure. During her visit to the barbaric surgeon's clinic. I week prior to surgery , Ms. as I s the nurse how the surgery will work to help her lose weight. what is the appropriate nursing response?