Happiness as a strength in the promotion of adolescent and adult young health.

Objectives: to assess the relation between sociodemographic characteristics of young people associated with the subjectivity of being happy; to evaluate the relationship between the subjectivity of being happy and the perception of health status; to evaluate the relationship between the subjectivity of being happy and the school and family environments and peer groups at school.

Methods: this is an observational study, with an intentional sample of 1,069 young Portuguese people, with ages varying from 14 to 24, most of them women, attending secondary education. The self-filling questionnaire was used.