Hydration is an important part of overall health, but when it comes to a renal diet, drinking the right amount of fluid is more complicated than simply drinking as much water as possible. Healthy kidneys help remove excess fluid from the body, while damaged kidneys may have difficulty doing so. As a result, some people with chronic kidney disease may need to limit their daily fluid intake to prevent fluid from building up in the body. The appropriate amount varies from person to person and may depend on kidney function, medications, dialysis, and other health factors.

For people who are not required to restrict fluids, staying adequately hydrated can be an important part of kidney care. Water is generally a simple choice, while foods with high water content can also contribute to daily fluid intake. However, people following a renal diet may need to be mindful of sodium, potassium, and phosphorus in beverages and foods. For example, some sports drinks, electrolyte beverages, and processed soups may contain added minerals or sodium that may not be appropriate for everyone with kidney disease.

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The most important takeaway is that there is no universal amount of fluid that every person with kidney disease should drink. While hydration is important, drinking excessive amounts of fluid can also be harmful for someone who has been instructed to restrict fluids. Talk with your doctor or renal dietitian about your individual fluid needs and how to recognize signs that you may be getting too much or too little. By following personalized recommendations, hydration can become an important and manageable part of a kidney-friendly lifestyle.

Sources:
carehospitals.com
National institutes for health