Background/Objective: It is essential to carry out a diagnosis of people's healthy lifestyles, in order to apply strategies to improve them. The aim of the study was to validate the Healthy Lifestyles Questionnaire (CEVS-II), collecting all factors that make up the concept of a healthy lifestyle, such as a balanced diet, respect for mealtimes, tobacco consumption, rest habits, alcohol consumption, other drug use and physical activity. Method: The questionnaire was completed by 1,132 people between 18 and 89 (M = 42.43; SD = 18.69) years from different parts of Spain. Results: The seven-factor model proposed by the Confirmatory Factor Analysis, according to the goodness indices, presented an acceptable fit (SRMR = .059; CFI = .973; RMSEA = .049; 90% CI [.046, .052]; chi(2)/df = 3.76), also presented good reliability indices and was endowed with concurrent validity. Conclusions: The results of the present study proved the validity and reliability of the Healthy Lifestyles Questionnaire in a Spanish population, which is an adequate instrument for the diagnosis of a healthy lifestyles in the Spanish population. (c) 2021 Asociacion Espanola de Psicologia Conductual. Published by Elsevier Espana, S.L.U. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
