To wise people here: Can body use the dietary protein both as direct energy source? I found such a statement in some publications. I thought that protein is used to make glucose through the process of gluconeogenesis and than glucose is used as energy source. If so is it a efficient process and can it supply large energy portion or should it be treated as marginal? If Paleo men sometimes was forced to live on up to 50% of calories from protein (as many Paleo authores suggest) it may be true but I just wonder how. Are amino acids burnt for anergy or what? Regards, _________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.