IRCT2012102911299N1 IRCT 2012-12-18 Nutritional Research Center, Vice chancellor for research, Tabriz University of Medical Sciences Effectiveness of nutritional education on weight loss A comparison of the effectiveness of a balanced low calorie diet with and without the transtheoretical model on weight loss in obese women 2012-10-22 anticipated 80 Complete https://irct.ir/trial/11580 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Supportive, Other design features: In this study, the subjects will be assigned to intervention or control group based on even/odd numbers of admission. Also the subjects and the outcomes assessor are blind to allocated treatment. 2 Obesity. Intervention 1: Intervention group: Individual balanced low calorie diet (an energy deficit of 500 calories of daily energy intake calculated from 3-day food records for every subject and the distribution of energy: <30% from fat, 55-60% from carbohydrate and 10-15% from protein) with six one-hour nutritional education sessions per week about Food Guide Pyramid, Food Exchange Systems, goal setting for weight loss, self monitoring, and stimulus control. Intervention 2: Control group: Individual balanced low calorie diet(an energy deficit of 500 calories of daily energy intake calculated from 3-day food records for every subject and the distribution of energy: <30% from fat, 55-60% from carbohydrate and 10-15% from protein).