Copyright: © 2012 Arrivillaga M, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Since the concept of health as a dynamic process that influences the physical, psychological and social functioning of people [1,2] it has been considered that diseases, health and well-being are related to risks corresponding to social systems and socioeconomic structures [3], and are evident throughout people s entire lives [4]. In this way the life course approach is necessary to understand health variations [5].