Energy Content of Macronutrients

Let's dive into the fascinating world of energy content in our main macronutrients! Understanding how much energy each macronutrient provides is crucial for both sports performance and general nutrition.

The Energy Values

Here are the approximate energy contents per 100g of each macronutrient:

Carbohydrates: 17 kJ/g (4 kcal/g) = 1,700 kJ per 100g
Proteins: 17 kJ/g (4 kcal/g) = 1,700 kJ per 100g
Lipids (Fats): 37 kJ/g (9 kcal/g) = 3,700 kJ per 100g

Note

Notice that carbohydrates and proteins provide the same amount of energy per gram, while lipids provide more than twice as much!

Understanding These Values

Carbohydrates and Proteins

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3.1.11. State the approximate energy content per 100 g of carbohydrate, lipid and protein.