OBJECTIVES: Obesity is regarded as one of the most prominent health threats worldwide and a serious risk factor for non communicable diseases, such as diabetes mellitus type 2, high blood pressure, cardiovascular diseases, and some types of cancer. ...METHODS: In this ecological study, the required data on HDI and its components were gathered from the latest report of the United Nations Development Program, and data on obesity and overweight were acquired from the latest reports published on the World Health Organization website. ...