Objectives:
To assess the relationship between selected parameters of the mental state and the quality of life of patients with diabetes.

Methods:
The study included 51 patients with type 1 diabetes and 52 patients with type 2 diabetes. The following scales were used in the study: quality of life SF-36, Acceptance of llness Scale (AIS), Hospital Anxiety and Depression Scale (HADS) and Satisfaction with Life Scale (SWLS).

Results:
Patients with type 2 diabetes achieved lower values than patients with type 1 diabetes only in the domain of physical functioning of the SF-36 scale (p = 0.001). Assessing the relationship between the studied parameters, it was shown that the duration of the disease was associated with a worse overall health rating (p = 0.036) among patients with type 1 diabetes. However, among patients with type 2 diabetes the duration of the disease correlated negatively with physical functioning (p = 0.002), physical functioning in social roles (p = 0.001) and physical pain (p = 0.047) as well as life satisfaction (p = 0.012) and positively with the results of glycated haemoglobin (p = 0.04). Among patients with type 1 diabetes, the level of depression negatively correlated with the level of acceptance of the disease (p = 0.0009) and life satisfaction (p = 0.006), while the level of anxiety only with the level of acceptance of the disease (p = 0.0004), and a greater severity of anxiety was associated with worse metabolic control (p = 0.02). In the group of patients with type 2 diabetes, the level of anxiety negatively correlated with the level of acceptance of the disease (p = 0.003).

Conclusions:
Due to the numerous limitations of chronic disease, more attention should be paid to the quality of life and mental state of patients diagnosed with diabetes, and assessment of the above parameters should be included in the therapeutic process.