During the early adulthood health promoting behaviors are created, but also risky behaviors increase. The research of health behavior is believed to be currently a valid method for estimating the health status of the population. The purpose of the research was to evaluate the health behaviors of young adults studying at various courses in Bydgoszcz universities. The study involved 313 people studying in the fields of health and engineering. The study used the Inventory of Health Behaviors (IoHB) by Z. Juczynski. Throughout the treatment group an average level of health-related behavior was shown. The highest level of health-related behavior has been shown in a group of students of Nutrition, the lowest in the group of students of Construction. The results of the students related to health were higher than the results of engineering courses. The women’s results were higher than men’s results.