What are proteins?

Proteins are macronutrients made of amino acids. They are essential nutrients found in both animal and plant foods.

The name protein originates from the Greek proteios, which means “first quality” [1] .

Nutrition Facts

Calories per gram = 4 Cal of “metabolizable energy” or 3.2 Cal of “net metabolizable energy” Cooked proteins (meat, eggs) are digested easier than raw proteins.