[NativeSon]

sucrose is a molecule must be chemically acted upon to break into the constituents

[Paradox]

Indeed, which occurs readily in the mammalian gut.

[9YearLurker]

But doesn’t that breakdown occur in digestion?

[Red Badger]

Although glucose can be metabolized by every cell in the body, fructose is metabolized almost entirely by the liver. There it can result in the generation of free radicals (damaged cells that can damage other cells) and uric acid (which can lead to kidney disease or gout), and it can kick off a process called de novo lipogenesis, which generates fats that can find their way into the bloodstream or be deposited on the liver itself. These byproducts are linked to obesity, insulin resistance and the group of risk factors linked to diabetes, heart disease and stroke. (Lustig gives a detailed explanation of fructose metabolism in a well-viewed YouTube video called "Sugar: The Bitter Truth.")

http://www.freerepublic.com/focus/f-chat/3065106/posts