Fructose turns to Fat? Why?

[SuperStrong]

I understand that fructose gets processed by the liver and doesn't go straight to the muscles. And I read that after liver stores are full the remainder is most likely turned to fat. But... doesn't fructose get converted to glycogen by the liver, and then now the glycogen is released into the blood stream so shouldn't it be able to then replenish whatever is needing glycogen replenishment, like muscles? Fructose just seems to take a two-step process to get to your muscles instead of a 1 step process like glucose. Just wondering if someone can explain why fructose after conversion in the liver is assumed to be converted into fat instead of being used up by the body like in muscle glycogen replacement which to me makes the most sense for an athlete and bodybuilder. Thanks in advance.

JM

 

[Nathan]

My instincts are telling me that the issue lies in negative feedback loops. That is, let's your blood becomes "concentrated" or close to "saturated" with glucose, your body should be aware of it and will send a message to your liver to just convert it there or something, and so some fructose never even has a chance to end up as muscle glycogen.
On the other hand, if you are low in blood sugar, I don't think it matters much if you ate fructose or glucose - it might take slightly longer to start feeling less shaky and like you have low blood sugar, but your liver will receive the message to turn the fructose into glucose.

Anyway you slice it, the important thing is not to over-eat for your body. IOf you eat too much, it gets stored as fat. I think it is just a simpler process with fructose and you don't risk REALLY off-the-wall energy levels liek you do with glucose. I think that comes into it as well - glucose can be used more readily for energy so when there is a surplus of it, there is a surplus of energy (and the rest gets stored to fat).