en Health Health Original Article Original Article <span style="font-size: 14px;"><span style="font-family: times new roman;"><span style="color: rgb(0, 0, 255);"><strong><em>Background:</em></strong></span> The present study evaluated the lifestyle behavior patterns and its associations with demographic factors in the Iranian population.<br> <span style="color: rgb(0, 0, 255);"><strong><em>Methods</em></strong><em>:</em></span> A total of 8244 people aged 25-70 years who participated in a national survey in 2011 were included in the study. Factors related to lifestyle (such as diet, physical activity, and tobacco use) have been collected using a questionnaire. A self-organizing map was used for cluster analysis and a multinomial logistic model was used for assessment of associations.<br> <span style="color: rgb(0, 0, 255);"><strong><em>Results:</em></strong></span> Seven clusters were identified as the following: cluster 1 (15.84%): healthiest lifestyle; cluster 2 (12.45%): excessive consumption of sweet tasting soft drinks, salt, and fast food; cluster 3 (33.73%): no recreational physical activity; cluster 4 (6.86%) alcohol consumption, smoking, and consumption of sweet tasting soft drinks; cluster 5 (14.18%): less salt and oil intake and lack of physical activity; cluster 6 (7.85%): no use of dairy products; cluster 7 (9.08%): the&nbsp;most unhealthy lifestyles; excessive work-related physical activity and smoking and unhealthy diet. Male gender was associated with higher odds of being in clusters 4 and 7. Individuals who were in unhealthy lifestyle clusters were mostly less educated and more self-employed or laborers.<br> <span style="color: rgb(0, 0, 255);"><strong><em>Conclusions:</em></strong></span> A very small percentage of individuals was in the healthy lifestyle cluster yet they had poor nutrition. Health policy-makers should pay more attention to low recreational physical activity among elder people and in middle-aged and housekeepers, and also to high work-related physical activities that have a&nbsp;strong tendency to be in a cluster with smoking among workers and less educated men.</span></span><br> &nbsp; lifestyle pattern, self-organizing map, cluster analysis, lifestyle, Iran 268 275 http://caspjim.com/browse.php?a_code=A-10-932-1&slc_lang=en&sid=1 Samaneh Akbarpour akbarpour691@gmail.com 100319475328460013186 100319475328460013186 No Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Davood Khalili dkhalili@endocrine.ac.ir 100319475328460013187 100319475328460013187 No Occupational Sleep Research Center (OSRC), Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran Hojjat Zeraati zeraatih@tums.ac.ir 100319475328460013188 100319475328460013188 No Prevention of Metabolic Disorders Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran Mohammad Ali Mansournia mansournia_ma@yahoo.com 100319475328460013189 100319475328460013189 No Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Araz Ramezankhani ma.ramezankhani@gmail.com 100319475328460013190 100319475328460013190 No Occupational Sleep Research Center (OSRC), Baharloo Hospital, Tehran University of Medical Sciences, Tehran, Islamic Republic of Iran Akbar Fotouhi afotouhi@sina.tums.ac.ir 100319475328460013191 100319475328460013191 Yes Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran