As for sex in the Study and Control Groups, the male predominated, constituting 80% and 70%, respectively. The difference found is not statistically significant (z=0.267; p=0.606). Half of the patients in both groups had black skin color, while 40% were white and the remaining 10% mestizo, differences that were not statistically significant (z=0.253; p=0.605). In the Study Group, the mean age of those included was 58.2 ± 7.4 years, while in the Control Group it was 49.5 ± 14.5 years. The difference observed from the statistical point of view is not significant (z=1.690; p=0.108). In the Study Group, the mean weight was 73.05±12.8 kg, height 1.73±0.06 cm and body mass index (BMI) 24.5±4.3. Meanwhile, in the Control Group the mean weight was 67.5 ± 13.6 kg, height 1.68 ± 0.1 cm and BMI 23.7 ± 3.9. The differences observed in the initial evaluation were not statistically significant: intragroup height (z=1.171; p=0.293), intergroup height (z=1.170; p=0.292), intragroup weight (z=0.888; p=0.358), intergroup weight (z=0.880; p=0.356), intragroup BMI (z=0.153; p=0.701) and intergroup BMI (z=0.150; p=0.355). Therefore, the values ​​recorded for height, weight and body mass index were comparable between both groups. The individual nutritional evaluation was performed based on individual BMI values. In the Study Group, half (50%) were classified as overweight followed by normal weight (40%) and then underweight (10%). Meanwhile, in the Control Group, 60%, 30% and 10% were classified as normal weight, overweight and underweight, respectively. The same result of the nutritional evaluation was recorded in the final evaluation. Therefore, there were no differences regarding this parameter between the initial and final evaluations. In the Study and Control Groups, according to personal pathological history, the most prevalent diseases were in this order: high blood pressure, cardiovascular disease, diabetes mellitus and polycystic kidneys. Hypertension was affecting all included patients (20 of 20) in both groups. The distribution of patients according to smoking habits recorded a frequency of non-smokers of 70% in the Study Group and 90% in the Control Group. This reported difference was not statistically significant (z=1.250; p=0.264). When describing the cause of chronic kidney disease in the patients of both groups, arterial hypertension and diabetes mellitus were found to be the most frequent causes. Among other causes, polycystic kidneys and the coincident presence of arterial hypertension and diabetes mellitus were reported. The differences between the groups were minimal and not significant (z=0.533; p=0.766). In the Study Group, in all the patients the vascular access route for hemodialysis was the arteriovenous fistula (AVF). On the other hand, in most of the patients in the Control Group it was this same vascular access route and only one patient had access through a central venous catheter (CVC). 90% (19 of 20) of the patients included in the study had vascular access due to arteriovenous fistula. The observed difference was not significant (z=1.500; p=0.305) In the patients of the Study Group, according to the time in years elapsed since the start of hemodialysis until inclusion, in 2 less than one year had elapsed; in 3 more than one year but less than three years; in 2 more than three years but less than five years; and finally in 3 more than five years. Meanwhile, in the Control Group, in 2 less than a year had elapsed; in 5 more than one year but less than three years; and in three more than five years. Although changes were observed in the time spent on hemodialysis, the differences were not significant (z=2.500; p=0.475).