**1. Introduction**

Currently, nutrition in transition can be found globally even in most developing countries. Declining under-nutrition is occurring in parallel with increases in over-nutrition, obesity and non-communicable diseases (NCDs). A double burden of malnutrition is now affecting the world population's quality of life.

For decades, nutrition education has been recognized as a preventive strategy for the sustainable reduction of both under- and over-nutrition. International organizations have developed guidelines for healthy eating that countries have adopted for preparing more practical foodbased dietary guidelines (FBDGs). More simplified FBDGs were later developed in different graphical designs according to national cultures and eating contexts. These FBDGs have been modified periodically by including additional factors other than foods that affect the nutrition and health statuses of population.

Industrially-produced foods are the other important sources of nutrients for people especially in more developed countries. An attempt in using industrial food products as an education tool for populations exists in terms of nutrition labelling, which indicates the amounts of certain selected nutrients on food package.

The traditional nutrition labelling panel, which contains amounts of nutrients that reduce risks of under- and over-nutrition, has been mandated in many countries. Data on these traditional nutrition labelling panels are normally tabulated and located on the back of food package or so called 'Back of Pack, BOP' nutrition labelling panel. After several years of implementation, the traditional BOP nutrition labelling panels were found to be inefficient tools for educating consumers, due to such causes as their hidden location on shelves, complicated information and unattractive design. Consumers generally did not use the panel, and it did not attract industries to reformulate their recipes towards healthier nutrient profiles. A more effective nutrition educational tool is now needed as the problems of overweight, obesity and non-communicable diseases have become serious nutrition issues worldwide, especially among the people of low socio-economic classes and with less education.

A simplified nutrition label in graphic format was introduced in the 1960s intentionally to conquer over-nutrition, and later more designs and types were widely developed. Among these differences, the common agreement was on the nutrients used for criteria development, which were basically related to non-communicable diseases, for example fat, sodium and sugar. In addition, this simplified nutrition labelling panel was located on the front of food package or so called 'Front-of-Pack, FOP' nutrition labelling panel. These panels of different types and different degrees of informativeness have been recognized differently by different groups of stakeholders within the food system. Most FOP nutrition labelling panels are still implemented on a voluntary basis. In this chapter, the logic behind the development of traditional and simplified nutrition labelling panels are discussed as well as their uses in many countries.