This is from a recent research study. "CONCLUSION
A significant increase in eGFR was seen in a small population of patients with CKD practicing intermittent fasting for four months or more. Previous studies report an average annual decline in GFR of 1.5-2 ml/min/1.73 m2 in the general CKD population, with a more rapid decline in certain subsets. Intermittent fasting as a preventive measure for the progression of CKD needs to be studied further."