Therefore, it is necessary to know, recognize and understand these changes in order to modify the relationship between individuals and food.
Anthropology of food; Dietary patterns; Food consumption; Food habits Food is an essential and fundamental part of culture in human society, in its physiological and cultural compliance.
According to Contreas and Garcia  food space is not just a totally social phenomenon anymore but a totally human phenomenon, which is a consequence of both biological and ecological phenomena just as much as a structuring factor of social organization, positioned in same level of importance, or even higher, as sexuality or kinship.
The evolutionist approach, being the pioneer in these studies, searched for explanations related to religion, giving emphasis to taboo, totemic, sacrifice and communion.
Food, therefore, can be considered an institution because it is fundamental for individuals to socialize and for norms to be transmitted; in addition to determine the nature and activities of a certain social group, covering and implementing physiological and social needs.
Through food, the social function of nutrition is emphasized in the manifestation of feelings that contribute to the socialization of individuals as members of their community .
We do not eat the amount of nutrients and calories only to keep the body functions in an adequate level, because a long time ago anthropologists affirmed that eating involves selection, choice, occasion and rituals, it overlaps with sociability, with ideas and meanings, with interpretations of experiences and situations.
To be eaten, or be edible, food has to be eligible, referred, selected and prepared or processed as culinary, and all this is cultural material .
At this moment, food is similar to language, since this practice defines ways of life.
It is then that the kitchen becomes a subsystem of culture, constituting a language in which each culture unconsciously translates its own structure .