Hey all...there's a question here that I just can't find the answer to.
Why does fructose only fill liver glycogen stores and not muscle glycogen as well?
Fructose is digested/absorbed in the small intestine, then it goes to the portal vein (just a vein that goes from the small intestine to liver). Then when the liver glycogen is full the excess is just converted to fat but there are several aspects I don't get.
But fructose is broken down into glucose, so why can't that glucose be used to restore muscle glycogen?
It might have something to do with GLUT2 and 5 but I'm not sure.
Can anyone help me nail this one? I think there's something simple I'm missing here.
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