CNS Nutrition Specialist Exam Prep

Category - Certified Nutrition Specialist

The Thermic Effect of Food (TEF):
  1. Is the amount of energy needed to digest and absorb food
  2. Makes up a large percentage of total energy expenditure
  3. Is unaffected by the nutritional composition of the diet
  4. May be increased through weight loss
Explanation
Answer: A - The Thermic Effect of Food (TEF) is the amount of energy needed to metabolize food. It is affected by the nutritional composition of the diet. The TEF for carbohydrate and fat is around 5%, while the TEF for pure protein may be as high as 25%. In a normal mixed diet the TEF comprises a small percentage of total energy expenditure.
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