This patient support community is for questions related to juvenile diabetes including celiac disease, depression, diabetic complications, hyperglycemia / diabetic keto-acidosis, hypoglycemia, islet cell transplantation, nutritional issues, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with diabetes.
There are GREAT protein shakes with very few calories and carbs called Pure Protein - my favorite flavor is the Banana Cream which has only 160 calories, 1g fat and 2g of carbs. They make bars too. http://www.pureprotein.net/pages/productDetail.aspx?PID=64295
Good luck!