OBJECTIVE: Health anxiety is defined as the negative over-interpretation of the usual physical sensations, although the person does not have any physical illness. The study aims to evaluate the health anxiety levels of individuals over the age of 18 who admit to primary healthcare institutions in Eskisehir and the factors that may be associated with it. METHODS: This is a cross-sectional study. The study was conducted in adults who admitted to primary healthcare in stitutions in Eskisehir. The study group consists of 1200 individuals. For the purpose of collecting data, a questionnaire including the questions regarding the factors related to health anxiety and the Health Anxiety Scale were used. In the analysis of the data, a logarithm of The Short Health Anxiety Inventory (SHAI) scores was performed to determine the factors affecting the inventory score and hierarchical multiple linear regression analysis was used. RESULTS: The total scores from The SHAI ranged from 1 to 47, with an mean of 16.4±8.7 and a median score of 15. Of 41.9% of study group scored above mean score. Female gender, deterioration of family income, presence of chronic disease, worsening of general health status, symptoms of mental and behavioral disorders, high number of admissions to health institutions, and hospitalization history were found to be factors affecting the level of health anxiety. CONCLUSION: Health anxiety was found to be an important problem among those who admitted to primary healthcare institutions in Eskisehir. Providing education to individuals in risky groups in terms of health anxiety, and these groups should be closely monitoring in terms of health anxiety and providing psychosocial support when necessary will prevent excessive use of health services in the long-term.