Kidney Diet Tips

Spinach: Yes or no for a dialysis diet?

spinachRaw spinach is lower in potassium than cooked spinach. If you’ve ever cooked a bag of spinach, you can probably guess why. When heated, spinach leaves wilt, so it takes about 3 times more to produce an equal volume.

For comparison, 1/2 cup cooked fresh spinach weighs 3 ounces and contains 419 mg potassium. 1/2 cup raw fresh spinach weighs 1 ounce and contains 156 mg potassium.

If a low potassium diet is required due to kidney disease or dialysis, it’s best to stick with raw spinach in small amounts. Try mixing spinach leaves with lettuce for a salad or add to your favorite sandwich or wrap.

Sara Colman, RDN, CDCES

Sara Colman, RDN, CDCES

Sara is a renal dietitian with over 30 years experience working with people with diabetes and kidney disease. She is co-author of the popular kidney cookbook "Cooking for David: A Culinary Dialysis Cookbook". Sara is the Manager of Kidney Care Nutrition for DaVita. She analyzes recipes and creates content, resources and tools for the kidney community. In her spare time Sara loves to spend time with her young grandson, including fun times together in her kitchen.