Abstract

The study examined the effects of dietary compliance and BMI on blood parameters in 80 hemodialysis patients. Data were collected using a descriptive form and biochemical tests at months 1, 6, and 12. It was found that 37.5% of the patients were in the 18–44 age group, 65% were male, 50% had normal weight, and 77.5% did not comply with the diet. At the 6th month, urea reduction ratio (URR) was higher in patients who complied with the diet compared to those who did not (p<0.05). At the 12th month, phosphorus levels were higher in non-compliant patients (p<0.05). At the 6th and 12th months, calcium × phosphorus product was higher in non-compliant patients (p<0.05). At the 6th month, parathyroid hormone (PTH) levels were higher in non-compliant patients (p<0.05). At the 1st month, hematocrit levels were higher in compliant female patients compared to non-compliant females, and at the 12th month, serum iron levels were higher in compliant male patients (p<0.05). URR values at the 1st and 12th months were lower in obese patients than in underweight patients (p<0.05). At the 12th month, creatinine levels were higher in obese patients compared to underweight ones, and ferritin levels were lower in obese male patients than in underweight males (p<0.05). Dietary compliance and BMI influence key biochemical parameters in hemodialysis patients. Nutritional monitoring, dietitian-led education, and protein intake control may improve treatment outcomes.