Corn syrup and high fructose corn syrup (HFCS) are used by many companies instead of sugar because they're less expensive. Even though they're made from corn, they're also highly processed, so your body processes them differently than regular sugar. HFCS and corn syrup also contain more calories and carbs than sugar, and since eating them can lead to type 2 diabetes and obesity, it's best to enjoy these in moderation. Do you know which foods contain them? Take this little quiz to find out.