Dursun M, et al. - Experts contrasted the red cell distribution width (RDW) values of men diagnosed with erectile dysfunction (ED) with those of healthy controls. Ninety-nine individuals who were diagnosed with ED were involved in the study. The control group had 100 men who came to the outpatient clinic. In men diagnosed with ED, fasting blood glucose, triglyceride (TG), total cholesterol, and LDL cholesterol levels were markedly higher. While the mean RDW value was 13.49 ± 1.52 and 12.91 ± 1.13 in men with ED and the control group, respectively. The RDW values of men with ED were discovered to be statistically significantly greater when RDW values were compared among the two groups. Only the patients' body mass index, fasting blood sugar, TG, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol levels (HDL-C), TG/HDL-C ratio and RDW levels' correlation with ED was statistically important. This seemed like the first study exhibiting an association between RDW and ED, however, some studies have revealed that RDW may be linked to some diseases such as cardiovascular diseases and cancer. Hence, for the discovery of the presence and monitoring of the severity of ED, RDW could be used as a predictor.