Competencies develop and changes throughout a persons life, they can gain or lose, going through various age stages. Their development does not end in youth, but continue on through the adult life. The ability to thing and reflect those thoughts specifically come forward in the center of structure of competency, which grows at the same time as the individual matures. One of the competency types is health competency. Health competency is a relatively new concept; it is not sufficiently researched. Aim of the study was to determine the factors of an adult individual health competency. 827 respondents participated in the study, in the processing of data was used SPSS. Was used factor analysis, analysis of variance with ANOVA and KruskalWallis test and Pearsons correlation. It was found that health competency is affected by several factors. These are: health education, health behavior, and the value of the environment. Each of the sets was distributed to key factors. It is the main factors affecting the health competence, but additional factors are: gender, education and income., Inara Upmale, Andrejs Geske, and Literatura