Obesity and metabolic syndrome increase the risk of developing cardiovascular disease. Besides, they prevail around the world and certainly become the most important health problems globally. Dietary intake and exercise are regarded as the first line approach to reduce the occurrence of obesity and metabolic syndrome. The purpose of this study is to assess study subjects' adherence to different weight control intervention programs and the effect of intervention programs on physical and biochemical examinations, physical fitness, food intake and exercise behaviors and the prevalence of metabolic syndrome and its components' abnormalities.