Macronutrients are the three main nutrients the body needs in large quantities. These comprise of protein, fat and carbohydrates.
When the topic of a plant based diet comes up, the most talked about concern is protein. If you are at a barbecue and not eating meat, someone is sure to ask you where you get your protein.
Proteins are compounds derived from chains of amino acids (building blocks) and have various functions in the body eg structural (hair/muscle), enzymes and antibodies.
Foods with a combination of starch and fiber are called ‘complex carbohydrates’. When ‘simple carbohydrates (simple sugars)’ are eaten they create a spike in blood glucose which is harmful for the body. The measurement of how fast sugars are released in to the system is measured by the ‘GI’ (glycemic index).
Fat like carbohydrates are used for fuel by the body and can store energy for later use (and insulation). Fat is also an essential component in cell membranes and used to make hormones in the body and absorb fat dependent vitamins.