en Epidemiology Epidemiology Original Research Original Research <p> <strong> Background: </strong>To estimate and compare prevalence of overweight and obesity among adult people across the 22 districts of Tehran in 2011. </p><p> <strong> Method </strong>s: This was a cross-sectional study using data on 47,406 women and 47,525 men aged≥ 15 years from a large population-based survey (Urban HEART-2). Age-standardized prevalence (ASP) of overweight (25≤BMI<30) and obesity (BMI≥30) were estimated for the Tehran’s districts. Pearson Chi2 tests and logistic regression were used to examine any significant differences in prevalence of these disorders across sociodemographic groups. </p><p> <strong> Results </strong>: ASPs of overweight were 36.5% and 32.0 % among men and women, respectively (p<0.001). These figures for obesity were 10.7% and 15.3% among men and women, respectively (p<0.001). Crude prevalence of overweight and obesity rose with age up to the age of 54 years and decreased thereafter. Across education groups, the lowest prevalence of overweight/obesity was seen among most educated people. The results showed that being young, single and student were associated with lower odds of overweight/obesity. </p><p> <strong> Conclusion </strong>: This study showed a high prevalence of overweight and obesity among adult in Tehran. There were significant associations between sociodemographic characteristics and prevalence of overweight/obesity among adults in Tehran. The results of this study might be used in identifying high risk groups of overweight and obesity in Tehran. </p> Overweight, Obesity, Prevalence, Tehran. 152 160 http://mjiri.iums.ac.ir/browse.php?a_code=A-10-1-792&slc_lang=en&sid=1 Aliasghar Ahmad Kiadaliri aliasghar.ahmad_kiadaliri@med.lu.se 200319475328460015023 200319475328460015023 Yes Clinical Epidemiology Unit, Orthopaedics, Department of Clinical Sciences-Lund, Lund University, Lund, Sweden. Mehdi Jafari mejafaris@gmail.com 200319475328460015024 200319475328460015024 No Department of Health Management, School of Health Management, Iran University of Medical Sciences, Tehran, Iran Mohammad-Reza Vaez Mahdavi vaezmahdavi@shahed.ac.ir 200319475328460015025 200319475328460015025 No Department of Physiology, School of Medicine, Shahed University, Tehran, Iran. Soghrat Faghihzadeh faghihz@modares.ac.ir 200319475328460015026 200319475328460015026 No Department of Biostatistics and Epidemiology, School of Medicine, Zanjan University of Medical Sciences, Zanjan, Iran. Naser Kalantari nkalantari1334@gmail.com 200319475328460015027 200319475328460015027 No Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, ShaheedBeheshti University of Medical Sciences, Tehran, Iran. Mohsen Asadi-Lari asadilari@iums.ac.ir 200319475328460015028 200319475328460015028 No Department of Epidemiology, School of Public Health and Oncopathology Research Centre, Iran University of Medical Sciences, Tehran, Iran.