Background:Diabetes is the most common metabolic disorder which is required to be taken under control. According to some studies, the impact of self-regulation on health has been considered as a monitoring strategy to achieve individual’s goals.Objectives:This study, which was performed in 2012, aimed at determining the consequences of self-regulation on controlling type 2 diabetes.Patients and Methods:In this double-blind clinical trial, 60 patients with type 2 diabetes - who were referred to Diabetes Clinic of Bisto-Dou Bahman Hospital in Gonabad, Iran - were divided randomly into case and control groups. Self-regulation questionnaire, nutritional information and physical activity checklists were completed by both groups once at the beginning and once at end of the training. Fasting blood sugar (FBS) of both groups were measured as well. Case group was trained for a month, whereas the control group received no special training. Data were analyzed by SPSS version 19 software, K-square and paired t-tests.Results:Comparing the case with the control group before and after the training showed that teaching patients self-regulatory strategies had significant impact on lowering blood sugar (-16.50 vs. -2.47, P < 0.001), observing dietary behaviors (5.97 vs. -0.87, P < 0.001) and increasing physical activities (6.2 vs. -0.73, P < 0.001) of the former group.Conclusions:Learning self-regulations has a role to play in controlling type 2 diabetes. Therefore, it is suggested to professionals in healthcare centers to educate patients about self-regulatory techniques and use them as auxiliary methods for keeping type 2 diabetes under control.