Tehran University of Medical Sciences Iranian Journal of Psychiatry 1735-4587 14 4 2019 11 23 302 308 Leila Jahangard Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran. Helen Behmanesh Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran. Mohammad Ahmadpanah Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran. Seyedeh Mahsa Poormoosavi Department of Histology, School of Medicine, Dezful University of Medical Sciences, Dezful, Iran. Alireza Soltanian Department of Biostatistics, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran. Mohammad Haghighi Research Center for Behavioral Disorders and Substance Abuse, Hamadan University of Medical Sciences, Hamadan, Iran. 2019 03 10 Objective: Health behaviors are defined as activities that affect either health status or disease risk. They can be divided into 2 categories: risky behaviors and health promoting behaviors. The growing body of evidence indicates that unhealthy behaviors often cluster in young individuals. Patterns of health-related behaviors are significantly different among countries and even among various regions of a certain country. Method: The present study was conducted to assess the youths’ patterns of health attitude, health-related behaviors, and their mental and physical wellbeing. In this cross-sectional study, 800 university undergraduate students were selected using multistage cluster sampling method. Standard questionnaires were filled by students. Results: About 13.3% of students smoked regularly and 14.3% reported at least one occasion of drinking, and heavy drinking was quite prevalent. Of the students, 95% reported regular physical activity and exercise. Eating habits were not healthy among the majority of students, as there was a high consumption of fast food and salt, and only 23.9% had normal body weight. Self-care behaviors were not prevalent among the students (3.2% breast self-exam and 8.5% testicular self-examination). Conclusion: Many factors may affect positive and negative heath behaviors, including knowledge, beliefs and attitudes, legal constrains, social context, and economic status. However, lower health literacy leads to more negative health behaviors. https://ijps.tums.ac.ir/index.php/ijps/article/view/1713 https://ijps.tums.ac.ir/index.php/ijps/article/download/1713/890