Health belief
Prevalence of diabetes is growing due to rapid population growth, increase of life expectancy, growth of urbanism, low physical activity, and increase in prevalence of obesity [1]. According to the International Federation of Diabetes, while the diabetic patients population in 2000 was less than 200 million, this figure reached 451 million (age range: 18-99 years) in 2017, and it is expected to hit 693 million in 2045. It is notable that about one half of diabetic patients are not diagnosed (49.7%) [2]. Prevalence of diabetes in the Middle East is growing fast and it is estimated that by 2030 Iran, after Pakistan, will have the second highest growth rate of diabetes prevalence. In 2008, the population of diabetic patients was four million and this figure is estimated to be 12million by 2022 [3-5]. Experts of health sciences believe that diabetic patients need to undertake the responsibility of many of their care behaviors such as following the recommended diet, exercising, regular physical activity, following drug usage prescription, monitoring blood glucose level, inspecting feet, and visiting physician on a regular basis [6, 7]. Results of studies in Germany and the UK have revealed that about 50-60% of diabetic patients demonstrated an increase in the level of glycated hemoglobin (HbA1c) despite receiving therapeutic services [8-10]. Although no definite treatment has been found for diabetes, proper health cares are effective in controlling the symptoms and disabling side effects so that the first objective in diabetes treatment protocols is to control blood glucose level. In this regard, HbAlC is the best indicator of diabetes control so that it is considered as a golden standard. The index represents mean blood glucose level over the past two to three months so that it has a close relationship with emergence of chronic side-effects of diabetes like microvascular in particular. One percent decrease in HbAlC in 10 years results in 21% decrease in diabetes caused deaths and 40% decrease in the eyes, renal, and neural side-effect (11, 12). Diabetes and diabetes type II in particular creates lipid metabolic disorders and an increase in the plasma fatty acids level is a key factor in development of insulin resistance. Increase in plasma fatty acids causes dyslipidemia in diabetic patients in the form of increase in low density lipoprotein (LDL), and decrease of high density lipoprotein (HDL). This iatrogenic function of lipoproteins (increase of triglyceride, increase of LDL, and decrease of HDL) causes atherosclerosis and increases the risk of cardiovascular incidents, which is the main cause of death among patients with diabetes type II [13].