If you have chronic kidney disease (CKD), you have probably heard conflicting advice about water. Some people are told to drink more. Others are told to cut back. This is not a mistake or bad advice, it’s because fluid needs with CKD depend on your specific stage, your kidney function, and other health conditions you may have.¹
This guide will not tell you a single amount of water to drink, because there is no one right answer that applies to everyone with CKD. Instead, it will help you understand why hydration with chronic kidney disease is important, why fluid needs change, what signs to watch for, and how to talk with your care team about the fluid goal that is right for you.
Why Hydration With Chronic Kidney Disease is Different
Healthy kidneys balance fluid in the body automatically, removing extra water as urine. As kidney function declines, that balancing act becomes harder. Some people’s kidneys struggle to hold onto enough fluid. Others’ kidneys struggle to get rid of extra fluid, which can cause it to build up around the heart, lungs, and legs.²
This is why hydration advice for CKD cannot be copied from general health guidelines like “drink eight glasses of water a day.” What is right for you depends on your kidney function, your CKD stage, whether you are on dialysis, and any other conditions like heart failure.³
Why Fluid Needs Are Not the Same for Everyone
In general:
-
Earlier-stage CKD: Many people do not need to limit fluids and may even need to make sure they are drinking enough, depending on their situation.³
- Later-stage CKD or dialysis: Fluid may need to be limited, since the kidneys can no longer remove extra fluid efficiently. For people on dialysis, fluid that builds up between treatments has to be removed during dialysis, which can be hard on the heart and blood pressure.²
Because of this range, the most important step is getting a personal fluid goal from your nephrologist or renal dietitian, and updating that goal as your kidney function changes.³
Signs You May Be Getting Too Little Fluid
- Dark yellow urine
- Dry mouth or feeling unusually thirsty
- Dizziness or lightheadedness
- Fatigue
- Constipation
If you notice these signs, let your care team know, especially if you have been told to limit fluids. They can help you figure out whether your fluid goal needs to be adjusted.
Signs You May Be Getting Too Much Fluid
- Swelling in the legs, ankles, or hands
- Shortness of breath, especially when lying down
- Sudden weight gain over a few days
- Puffiness around the eyes
These signs can point to fluid buildup and should be reported to your care team, particularly if you are on dialysis or have heart failure along with CKD.²
Questions to Ask Your Care Team
Because fluid needs are personal, the best next step is a direct conversation. Consider asking:
- “Based on my current kidney function, how much fluid should I be aiming for each day?”
- “Does this include fluid from food, like soup or fruit, or just what I drink?”
- “How will my fluid goal change if my kidney function changes or if I start dialysis?”
- “What symptoms should tell me I need to call you about my fluid intake?”
- “Are there specific times of day or situations where I should be more careful with fluids?”
Practical Tips for Managing Fluid Day to Day
If your care team has given you a specific fluid target, these general strategies (used by many people managing fluid restrictions) may help:⁴
- Use a marked water bottle or container to track intake against your personal goal.
- Sip fluids slowly throughout the day rather than drinking large amounts at once.
- Keep in mind that foods like soup, gelatin, ice, and popsicles count as fluids.
- Rinse your mouth with cold water or chew gum to help manage thirst without drinking extra fluid.
- Ask your dietitian about low-sodium eating, since sodium can increase thirst and fluid retention.
Self-Advocacy Language For Readers
If you want to better understand your personal fluid needs with CKD, try using these words:
- “I want to understand exactly how much fluid is right for me at my current stage of kidney disease.”
- “I’ve been having [symptom]. Could this be related to too much or too little fluid?”
- “Can you walk me through which foods count toward my fluid limit?”
- “My fluid needs feel confusing. Can we go over this together so I have a clear plan?”
How the NOWINCLUDED Community Can Help You
Managing chronic kidney disease often means juggling advice that feels contradictory or hard to keep straight. You are not alone in finding this confusing, and you should not have to guess.
Inside the NOWINCLUDED app, you can find trusted, culturally aware health education that helps turn confusing health decisions into clearer next steps, and connect with others managing similar conditions.
Frequently Asked Questions
Q: How much water should someone with CKD drink?
A: There is no single amount that applies to everyone with CKD. Fluid needs depend on your specific kidney function, CKD stage, and whether you are on dialysis. A nephrologist or renal dietitian can set a personal fluid goal for you.
Q: Does CKD always mean limiting fluids?
A: No. Many people in earlier stages of CKD do not need to limit fluids. Fluid restrictions are more common in later-stage CKD or for people on dialysis.
Q: What counts as fluid for someone with a fluid restriction?
A: Fluid includes anything liquid at room temperature, including water, coffee, tea, soup, ice, gelatin, and popsicles.
Q: What are signs of too much fluid buildup with CKD?
A: Swelling in the legs or hands, shortness of breath, sudden weight gain, and puffiness around the eyes can signal fluid buildup and should be reported to a care team.
Q: Who should I ask about my personal fluid needs?
A: A nephrologist (kidney doctor) or renal dietitian is best positioned to set and adjust your personal fluid goal as your kidney function changes.
Note: This article intentionally avoids providing a specific fluid amount, since fluid needs with CKD vary significantly by individual and stage. If you’re living with CKD, you should work with your nephrologist or renal dietitian for a personal fluid goal.
References
- CDC. (2024, May 7). Chronic Kidney Disease Basics. Retrieved from Centers for Disease Control and Prevention: https://www.cdc.gov/kidney-disease/about/index.html
- National Institute of Diabetes and Digestive and Kidney Diseases. (2023, June). Eating Right for Chronic Kidney Disease. Retrieved from NIDDK: https://www.niddk.nih.gov/health-information/kidney-disease/chronic-kidney-disease-ckd/eating-nutrition
- American Kidney Fund. (2023). Diet and Nutrition for Chronic Kidney Disease. Retrieved from American Kidney Fund: https://www.kidneyfund.org/all-about-kidneys/chronic-kidney-disease-ckd/diet-and-nutrition-chronic-kidney-disease
- Mayo Clinic. (2023, August 15). Chronic Kidney Disease: Diagnosis and Treatment. Retrieved from Mayo Clinic: https://www.mayoclinic.org/diseases-conditions/chronic-kidney-disease/diagnosis-treatment/drc-20354527
