The nutritional factor affects the cognitive level of students and young people who are in the developmental stage in ages from birth to approximately twelve to fifteen years and much more if they are studying. This time of greater importance when the cognitive level of the same is already in development. The cognitive level is the basis for the development of competencies and for the application in the real context of students in countries with the best educational systems in the world, their teachers design all their planning through the use of various techniques and didactic processes. That will be applied in a real way in the formation of nutritionist knowledge. The countries of the world develop nutritional study techniques to prevent learning difficulties in time.