Diabetes mellitus (DM) is a common chronic disease and its treatment is generally ineffective. The aim of this study is to detect the relationship of waist-hip circumference, body mass index, blood pressure level, stress and anxiety level with fasting blood glucose levels of patients. Study was designed as cross sectional and had been performed through June to September 2007. Total 431 participants which were at or over 18 year old included in the study. Patients with prior diagnosis of DM and pregnancy were excluded from the study. Informed consent was obtained from all participants. Datas were gathered from simple randomly selected participants with a questionary form which was composed of 18 questions for demographical datas, 12 questions for general health questionnaire (GHQ), and antropometric measurements. The average score for the general health of persons was 2.29 +/- 2.93 and 43.4% of persons were psychologically at risk. The average fasting blood sugar is 113.88 +/- 41.27 mg/dl. GHQ-3 was revealed to effect fasting blood glucose levels in this study (R = 0.559; R(2) = 0.313; F = 5.997; p < 0.001 significance level of GHQ-3 p = 0.027; t = 2.222). GHQ-3 was shown to be the independent factor effecting fasting glucose levels in this study and it emphasized that evaluation of mood of patients admitted to health care services is very important in the prevention of DM.