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Why are proteins not usually used for energy?

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User Keneil
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2 Answers

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Turning animos acids in molecules that can be used in the Krebs cycle takes energy which means that burning protein for fuel is not as efficient as burning carbohydrates

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User Jawn
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Turning amino acids into molecules that can be used in the Krebs cycle takes energy, which means that burning protein for fuel is not as efficient as burning carbohydrates. In addition, your body needs amino acids to make new proteins.

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User Konrad Kleine
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