Introduction: Obesity is defined as abnormal or excessive fat accumulation that may impair health. It is
on the rise worldwide, not sparing developing countries. Both demographic and socioeconomic factors play
an important part in its causation. Body mass index is a simple index of weight-for-height that is commonly
used to classify overweight and obesity in adults. This study was done with objectives of assessing the prevalence of overweight and obesity and its associated factors among adult women attending selected outpatient departments of tertiary care center in western region of Nepal. Methods: A descriptive cross-sectionalthe study was conducted for six months. A total of 160 female respondents aged more than 20 years attending outpatient departments were included in the study using non-probability convenient sampling technique. Data on socio-demographic status, dietary pattern, health risk behavior and presence of chronic illness were collected and anthropometric measurements were taken for all the respondents. Results: The prevalence of overweight and obesity were 31.8% and 3.8% respectively. There was a statistically significant association between obesity and overweight with age (p=0.044), educational status (p=0.017), frequency of consumption of fruits (p=0.029), dietary pattern (p=0.023), frequency of consumption of dairy products (p=0.019), marital status (p=0.020) and drinking alcohol (p=0.022). Conclusion: Age, educational status, frequency of consumption of dairy products, dietary habits, marital status and drinking habits were strongly associated with obesity and overweight among adult women.

Keywords: Body Mass Index, Obesity, Prevalence, Risk factors, Women