Fructose is a superior alternative to cane sugar because blood sugar levels are not affected nearly as quickly. Fructose metabolizes slower than table sugar and does not raise glucose levels as fast as table sugar. Fructose is commonly called "fruit sugar" because it is the main sugar in many fruits. However, fructose is now produced from corn syrup, which is derived from corn. Fructose is sweeter than sucrose (1.8 times) and requires about 1/2 the amount to get the same sweetness. This means fructose uses nearly 50% less calories per serving.