Objective: In view of the unfavourable results of the HLS-EU Project in Spain and given that there are hardly any studies about health literacy (HL) in adolescents, it was proposed as main objective to determine the degree of HL of adolescents after Obligatory Secondary Education (OSE) and the educational necessities which they perceive in Health Education (HE).
Methods: Observational descriptive cross-sectional study with students in their first year of Upper Secondary Education for the academic year 2018/2019 from Healthcare Area V (Asturias). It was an equi-probabilistic one-stage cluster sampling, selecting 12 classrooms with 323 students.