Burhan Abdollahi,Mohtasham Ghaffari,Ameneh Pooresmaeil Dorosteh,Sakineh Rakhshanderou, The Role of Diabetes-Related Self-Management in Type II Diabetes Mellitus and Impact on HbA1c Journal of Diabetes Metabolism and its Complications 2022 2674-4163 http://dx.doi.org/10.31487/j.JDMC.2022.01.01 https://www.sciencerepository.org/the-role-of-diabetes-related-self_JDMC-2022-1-101 Abstract: Background: The most important factor in controlling diabetes is self-management behaviour and its development is the first step toward helping the patients to successfully control their disease. The current study was conducted so as to investigate self-management behaviour and its Impact on HbA1c. Methods: This study was carried out on 220 type-2 diabetic patients in 2020. The data was gathered through demographic and diabetes self-management questionnaire (DSMQ) and it included 16 items at four dimensions. The data analysed by independent t-test, One-way ANOVA, Multiple Linear Regression and Logistic Regression. Results: There was a significant relationship between gender and physical activity, diet, and diabetic self-management (P-value> 0/001). Also, there was a significant relationship between economic status and glycemic control, diet, and diabetic self-management (P-value>0/05). In addition, family history of the disease and glycemic control, diet, and diabetic self-management were found to be meaningfully related (P-value> 0/05). Smoking and glycemic control on the one hand and diabetic self-management and BMI, on the other, experienced meaningful relationship (P-value >0/05). The most adverse effects were among patients who had unfavourable or minimum self-management: 10.7% kidney complications and 17.9% visual impairment (P-value>0/05). Dietary control is the strongest predictor of HbA1c in all diabetics and people with borderline self-management and diabetics without complications (P-value> 0/000). Conclusion: Diabetes-related self-management predicted HbA1c levels and type-2 diabetic complications and intervention programmes crucial in increasing patients’ awareness, learning, and participation.Keywords: Diet, glycemic control, HbA1C, Healthcare, physical activity, self-management, type-2 diabetes