Macronutrients and Micronutrients – What’s the difference?

There are three main macronutrients: carbohydrates, proteins and fats. The reason they are called ‘macronutrients’ is that they are needed in larger amounts. All three macronutrients are as essential as each other and come with multiple functions.


Carbohydrates are our primary fuel source, consisting of sugars, starches and dietary fibre. It is our primary fuel source because the body’s tissues require a constant supply of glucose, which is used as fuel.  Most of the carbs that we consume are digested and broken down into glucose. They provide four calories per gram.