Nutrition education is concerned with disseminating nutrition knowledge relevant to food behavior. It aims to changes in parallel to nutrition recommendations which are seen important in a population level. But in the individual level the relationship between knowledge and behavior becomes more complex. Individuals are often loaded with controversial nutrition knowledge sometimes too concentrated in separate facts and forgetting the whole. The role of the professionals in the area of health care is very important as mediators. They should explain to their patients or clients how the important changes are put into practice and what kind of information is relevant in keeping the whole diet in mind.