Tryptophan and other amino acids affect brain chemestry I am considering the band and frankly loosing the comfort of carbs concerns me. These are several good web sites that will explain. Today is my first day on a blog you are my first contact! The subject is important to me because I tend to be emotional The lower "glycemic index"foods can be a comfort too,I am new to this process and don't know if it is for me exactly for this reason, Best wishes Purple Girl