Purpose: Aging is a critical period of human life and paying attention to the issues and needs of this stage is a social necessity. Research has shown that increasing age leads to a successful decline in aging. It also has a negative effect on quality of life. In addition, chronic diseases, especially diabetes, are the most effective diseases on successful aging. The aim of this study was to investigate the effect of diabetes risk factors in patients with diabetes through mediated quality of life using structural equation modeling (SEM).
Materials and Methods: The method of study is descriptive structural equation modeling. The statistical population included the elderly aged 60 years and older with type 2 diabetes referred to health centers in Shiraz. The sampling method is random stratified sampling. The sample size was estimated at 593 people. After collecting the questionnaires, descriptive statistics, linear regression and structural equation modeling (SEM) using MPLUS software version 8 were used.
Findings: In this study, significant relationships between successful aging and age variables were confirmed, but this relationship was not significant with mediated quality of life. Successful physical activity and aging were confirmed both directly and through mediated quality of life. But no significant relationship was observed between fasting blood sugar, smoking and BMI and successful aging mediated by quality of life.
 Conclusion: The results of this study showed that with increasing successful old age and quality of life decreases and the fit of the model was confirmed at a moderate level.