Does white bread turn to sugar after you eat it?

White bread is mainly the carbohydrate starch. When starch enters the body it is digested by enzymes. It is firstly broken down by amylase which turns the starch into maltose (note: if you hold bread in your mouth for a while it goes sweet). The maltose is broken down by maltase into glucose which can then be used for respiration but if it isn't then it turns to fat.