The key to a balanced diet is a wide variety of food, eaten in sufficient quantities, to ensure a satisfactory intake of nutrients (proteins, carbohydrates, fats, vitamins, minerals and trace elements) and thus adequately cover the different needs of each individual, both in terms of quantity and quality.
A balanced diet helps to keep individuals and populations in optimum health. It is measured over the course of a week, not a single meal or even a single day.
