It can be confusing to read information about the various sweeteners that are used in processed food, especially because there are so many conflicting claims. High Fructose Corn Syrup (HFCS) is one of the controversial sweeteners that you need to learn more about. The marketing claims for this ingredient suggest that HFCS responds in a similar way within your body as regular sugar, but the truth is that there are some stark differences between real sugar and HFCS.