What are the commonly-reported TEF values for protein?

What are the commonly-reported TEF values for protein?

• A. 0-3%
• B. 5-10%
• C. 20-30%
• D. 10-30%

Answer: (C)

The correct answer reflects the commonly-reported thermic effect of food (TEF) values for protein, which are typically in the range of 20-30%. This high TEF for protein is due to the fact that protein requires more energy for digestion, absorption, and metabolism than carbohydrates and fats. When people consume protein-rich foods, the body expends significant energy in breaking down amino acids, incorporating them into proteins, and processing nitrogen. This increased metabolic activity results in a higher percentage of caloric expenditure associated with the intake of protein. While other macronutrients have lower TEF values—carbohydrates generally have a TEF of about 5-10%, and fats are even lower—protein stands out for its higher thermogenic effect. This characteristic has implications for weight management and nutritional strategies, as foods high in protein can contribute to a higher overall calorie expenditure through the TEF. Understanding these values is essential for those seeking to optimize their diets for weight management or muscle preservation.

The correct answer reflects the commonly-reported thermic effect of food (TEF) values for protein, which are typically in the range of 20-30%. This high TEF for protein is due to the fact that protein requires more energy for digestion, absorption, and metabolism than carbohydrates and fats. When people consume protein-rich foods, the body expends significant energy in breaking down amino acids, incorporating them into proteins, and processing nitrogen. This increased metabolic activity results in a higher percentage of caloric expenditure associated with the intake of protein.

While other macronutrients have lower TEF values—carbohydrates generally have a TEF of about 5-10%, and fats are even lower—protein stands out for its higher thermogenic effect. This characteristic has implications for weight management and nutritional strategies, as foods high in protein can contribute to a higher overall calorie expenditure through the TEF. Understanding these values is essential for those seeking to optimize their diets for weight management or muscle preservation.