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In order to break down body fat or muscle, do you first have to undergo glycogen


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#1 Lo.Lee.Ta.

Lo.Lee.Ta.

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Posted 13 April 2015 - 05:15 AM

I assume ketone bodies (made in the liver from fatty acids) are just used as a way to export acetyl CoA (derived from body fat, fat from food, muscle, or protein from food) to other body cells... Is this right? 

In order to even break down fat and access the fatty acids, don't you have to be out of sugar to metabolize? 
Does the drop in blood sugar trigger glycogenolysis and then gluconeogenesis after glycogen stores are depleted? 
I was thinking that gluconeogenesis was the only way fat or protein could get broken down... 

Is that right...? :/ ...very confused... :( 
Thanks so much!





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