Dietary Management of Autosomal Dominant Polycystic Kidney Disease (ADPKD)

Introduction to Dietary Recommendations

For patients with Autosomal Dominant Polycystic Kidney Disease (ADPKD), a low-sodium, moderate-protein diet with adequate hydration based on thirst is recommended to slow disease progression and reduce complications, as suggested by guidelines from reputable sources such as the National Kidney Foundation 1, 2

Limit sodium to <2000 mg/day, as high salt intake is associated with higher blood pressure, increased proteinuria, faster progression to end-stage renal disease, and blunted effectiveness of antihypertensive medications, according to the American Heart Association and the National Kidney Foundation 1, 2

Moderate protein intake of 0.6-0.8 g/kg body weight/day is recommended for patients with CKD stages 3-5, and increase to 1.0-1.2 g/kg body weight/day if on dialysis, as suggested by the National Kidney Foundation and the Academy of Nutrition and Dietetics 3
Unnecessary protein restriction should be avoided, especially in children, to prevent malnutrition, as recommended by the American Academy of Pediatrics and the National Kidney Foundation 1

Drink according to thirst and avoid dehydration, as ADPKD patients are more sensitive to water deprivation than those with other kidney diseases, according to the National Kidney Foundation and the American College of Physicians 1
While high water intake is often recommended to suppress vasopressin production, evidence from interventional studies does not confirm a clear benefit, as noted by the European Renal Association and the European Dialysis and Transplant Association 1

Maintain normal body weight, as obesity is an independent predictor of faster renal function loss in ADPKD, and consider the weight of cystic kidneys when calculating BMI, as recommended by the American College of Cardiology and the National Kidney Foundation 1, 2

Avoid excessive caffeine intake, and limit alcohol to ≤1 drink/day for females and ≤2 drinks/day for males, as recommended by the National Kidney Foundation and the American Heart Association 2
Follow general recommendations for a healthy diet consistent with World Health Organization and CKD guidelines, and a Mediterranean diet may be beneficial for improving lipid profiles in CKD patients, as suggested by the World Health Organization and the National Kidney Foundation 2, 3
Increased fruit and vegetable intake may help decrease body weight, blood pressure, and net acid production, according to the National Kidney Foundation and the Academy of Nutrition and Dietetics 3

A low-osmolar diet (low sodium, moderate protein, adjusted water intake) decreased levels of copeptin (vasopressin marker) in adults with ADPKD, and target urinary osmolality <280 mOsM/kg, as recommended by the National Kidney Foundation and the European Renal Association 1
Work with registered dietitians for individualized counseling, particularly for patients with advanced CKD, those at high risk for urinary stones, overweight or obese patients, and those with malnutrition or sarcopenia, as suggested by the National Kidney Foundation and the Academy of Nutrition and Dietetics 2

Excessive salt restriction in ADPKD-UMOD and ADPKD-REN patients may aggravate hyperuricemia and volume depletion, and unnecessary protein restriction can lead to malnutrition, especially in children, as noted by the National Kidney Foundation and the American Academy of Pediatrics 1, 4
Vasopressin analogues should be avoided in ADPKD patients, as they can be detrimental to disease progression, and dehydration should be strictly avoided as ADPKD patients are more sensitive to water deprivation, as recommended by the National Kidney Foundation and the European Renal Association 1