Background & Aim: The relationship between weight and health is complex relationship and there is a relationship between many health problems and diseases associated with weight change, and among women who are in vulnerable segments of society they are more affected in mental health effects on weight than men. This study was conducted to investigate the relationship between BMI and mental health.

Material & Methods: This is a cross-sectional study using cluster random sampling of 150 women 64-18 years old referring to health centers Boroujerd were enrolled in 2014.

Demographic and mental health questionnaire (GHQ-28) that was previously validated for the Iranian population, Interviews were completed by subjects. Measuring height and weight using the balance scale in a health center with 100 grams were collected.

Results: Most subjects of this research were in the age group 34-25 years, graduate in diploma level, married, housewife, had a child, and their income were under four hundred dollars in a month, not addicted to smoking and they had had personal housing. 42.7 percent had normal BMI, 38.7 percent of body mass index had overweight, and 18.6 were obese. The mean total score of mental health in them were 22.8, and 62 percent of total cases were with normal mental health.

Conclusion: According to this study seems to be independent of body mass index on the mental health effects ,Culture and body image perceptions are individual factors that have a role in mental health.