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Explain how an excess of any and all of the three energy-yielding nutrients contributes to body...

Explain how an excess of any and all of the three energy-yielding nutrients contributes to body fat and how inadequate intake of any of them shifts metabolism.

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Explain how an excess of any and all of the three energy-yielding nutrients contributes to body fat and how inadequate intake of any of them shifts metabolism.

When energy intake exceeds energy needs, the body makes fat- regardless of whether the excess intake is from protein, carbohydrate, or fat. The only difference is that the body is much more efficient at storing energy when the excess derives from dietary fat.
When fasting, the body makes various adjustments: expanding the breakdown of fat to give vitality to the vast majority of the cells, utilizing glycerol and amino acids to make glucose for the red platelets and focal sensory system, creating ketones to fuel the cerebrum, smothering the craving, and moderating digestion. All of these measures conserve energy and minimize losses. Low carbohydrate diets incur similar changes in metabolism.

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