Purpose: Patients with type 2 diabetes will be easier to adapt to treatment if they accept their illness. To investigate the association between individual, disease-related and care-related properties of the individuals and their accepting the disease, and effective insulin administration.

Material and Methods: 103 diabetic patients were included in the study. The Acceptance of Illness Scale (AIS) and the Diabetes Fear of Injecting and Self-Testing Questionnaire (D-FISQ) were used for the data collection. The data were analyzed using the descriptive statistics.

Results: The Cronbach alpha was 0.96 for AIS, 0.95 for fear of self-injecting (FSI), 0.80 for fear of self-testing (FST) and 0.85 for total D-FISQ. A negative association was determined between the AIS score, and FSI, FST, total D-FISQ; a positive association was found between the FSI score and FST, total D-FISQ scores and between FST and the total D-FISQ scores. The FSI score was found to be higher among females.

Conclusion: Accepting the disease affects an effective insulin administration behavior. Hence, nursing care and education of the individuals should be planned and implemented so as to improve the acceptance level of diabetes.