Long-term Effects of the New Nordic Renal Diet in Patients With Moderate Chronic Kidney Disease

As Chronic Kidney Disease (CKD) progresses normophosphatemia is maintained by increasing the per nephron urinary phosphorus excretion. Clinically, hyperphosphatemia is associated with high mortality, vascular calcification, endothelial dysfunction and progression of left ventricular hypertrophy. Currently the treatment of hyperphosphatemia is first being initiated in stage 5 and consists of dietetic guidance to avoid dietary phosphate and treatment with oral phosphate binders. However, studies have shown important side effects to phosphate binders in terms of progression of vascular calcifications. Therefore, it might be beneficial to start the dietetic treatment with a reduction of dietary phosphate earlier in the disease stage. The aim of this project is to develop a New Nordic Renal Diet (NNRD) for CKD patients' stage 3-4 and to examine the long-term effects in a period of 26-weeks. NNRD has a high content of vegetable foods, less animal products and more local food items with a lesser content of phosphorus.