Nutritional epidemiology currently studies the diet-disease relationships. In this review, we analyse the impact of diet on health and the importance of dietary factors in the prevention of non-communicable diseases.

Techno-science currently comprises a complex system of knowledge production and transfer, of artefacts that constantly reshape social practices, with repercussions on people’s daily lives. The chemist, doctor, engineer, economist, or even the artist, are just another component of a complex network where social dynamics, knowledge,