A study was carried out with 501 persons to analyze the predictive capacity of various psychosocial variables—symptom perception, neuroticism, Personality Types 2 and 4 of Grossarth-Maticek and Eysenck, beliefs about health, social support, or certain coping styles—on two health-related behaviors: the frequency of visits to the doctor and self-medication. The results were analyzed by two structural equation models that revealed that some of the variables have direct effects on the behaviors, whereas other variables, such as attribution style, coping styles, or the impact of the stressors, have indirect effects via the reported symptoms or neuroticism. In addition, self-medication and the frequency of health service visits are independent of each other, which shows that their determinants are different. It is concluded that to address these factors in the two health indicators, it is also necessary to take in account the psychosocial variables considered herein.