In addition to your comment, Sugar/Sucrose can be processed by your entire body. Fructose can only be processed by your liver. Consuming too much Fructose (easy to do), is not a good thing for your Liver.
Sugar is a bonded pair of fructose and glucose. In the stomach an enzyme breaks the bond and both sugars are absorbed. Glucose can be used by any cell but fructose is processed by the liver. It seems that fructose is what is disturbing blood and metabolism.