en public specific orginal article <div style="text-align: justify;">&nbsp;<br> <strong>Background: </strong>Obesity is considered as the greatest cause of chronic diseases worldwide. The prevalence rate of obesity and overweight should be recognized in the community for planning and prioritizing health problems. The aim of this study was to investigate the prevalence of obesity and overweight and its related factors among residents of Yazd city, Iran. <strong>Methods: </strong>This cross-sectional study was conducted among 790 participants aged 20-70 years. Participants were selected through multi-stage systematic sampling in 2018. The individuals&#39; demographic data, and anthropometric measurements such as height and weight were measured. Data were analyzed by descriptive statistics, chi-square, and correlation coefficients. <strong>Results: </strong>The mean age of participants was 45.10 &plusmn; 14.56 years. According to the results, 170 (21.51%) and 280 (35.44%) participants were obese and overweight, respectively. Overweight was also associated with demographic variables of mobility, age, and income. Furthermore, a significant relationship was found between weight status and demographic variables of mobility, age, and income. Based on the results, a significant and positive correlation was observed between body mass index and age (R = 0.75, <em>P</em> = 0.03). <strong>Conclusion: </strong>Obesity and overweight is a major public health problem in Yazd, especially among women, older age, and low-income groups in Yazd. Therefore, appropriate plans should be designed to reduce this health problem.</div> Prevalence, Obesity, Overweight, Yazd 192 200 http://jnfs.ssu.ac.ir/browse.php?a_code=A-10-123-5&slc_lang=en&sid=1 Ameneh Marzban 0000-0002-8111-3319 No Department of Human Ecology, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Azadeh Nadjarzadeh https://orcid.org/0000-0002-9740-8402 No Nutrition and Food Security Research Center, Department of Nutrition, Shahid Sadoughi University of Medical Sciences, Yazd, Iran Masoumeh Abbasi-Shavazi 0000-0002-0573-7429 No Department of Health Education and Promotion, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Mohammad-Reza Rezaei 0000-0001-6961-4463 No Department of Geography, Yazd University, Yazd, Iran Sara Jambarsang 0000-0002-8295-7812 No Department of Biostatistics, Research Center of Prevention and Epidemiology of Non-Communicable Disease, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran. Mohammad-Hassan Ehrampoush ehrampoush@ssu.ac.ir 0000-0001-7019-569X Yes Environmental Science and Technology Research Center, Department of Environmental Health Engineering, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.