Chronic kidney disease, or CKD, is one of the most common chronic conditions among older adults — and one of the most misunderstood. Because the kidneys do their work quietly, many people have no idea anything is wrong until a routine blood test flags it. The good news: understanding CKD makes it far less frightening, and there is a lot that can be done to slow it down and live well.
What Chronic Kidney Disease Is
Your kidneys are two bean-shaped organs that filter waste and extra fluid out of your blood, balance minerals, and help control blood pressure. In chronic kidney disease, that filtering ability declines gradually over months or years. "Chronic" simply means long-term and slow-moving, as opposed to a sudden kidney injury.
Doctors measure kidney function with a blood test that produces a number called the eGFR (estimated glomerular filtration rate), often alongside a urine test that checks for protein. Together these tell your doctor how well your kidneys are working and whether the condition is stable or progressing.
The Five Stages of CKD
CKD is grouped into five stages. Knowing your stage helps you and your care team understand what to focus on. Only your doctor can determine your stage.
| Stage | Kidney Function | What It Generally Means |
|---|---|---|
| Stage 1 | Normal or high, with some sign of damage | Often no symptoms; focus on managing causes |
| Stage 2 | Mildly reduced | Usually still no symptoms; monitoring matters |
| Stage 3 | Moderately reduced | Symptoms may begin; often when a specialist is involved |
| Stage 4 | Severely reduced | Planning for future treatment options begins |
| Stage 5 | Kidney failure (end-stage) | Dialysis or transplant may be needed |
Many people live for years in the early and middle stages without ever progressing to kidney failure, especially when the underlying causes are well managed.
Common Symptoms
Early CKD often has no symptoms at all. As it advances, some people notice:
- Fatigue or low energy
- Swelling in the ankles, feet, or hands
- Changes in how often or how much they urinate
- Trouble sleeping
- Poor appetite or nausea
- Difficulty concentrating
Risk Factors
The two biggest drivers of CKD are diabetes and high blood pressure. Other factors that raise risk include heart disease, a family history of kidney disease, being over 60, and a history of certain infections or long-term use of some medications. Managing diabetes and blood pressure is often the single most important thing a person can do to protect their kidneys.
Managing a Chronic Condition on Medicare?
Some Medicare Advantage plans — including Chronic Condition Special Needs Plans — are built to coordinate care around conditions like kidney disease and diabetes. Answer 6 quick questions and a licensed advisor can check what is available where you live.
Check My EligibilityLiving Well With CKD
A CKD diagnosis is not the end of a full life. People manage it every day with the help of their care team. Common parts of a care plan include:
- Controlling blood sugar and blood pressure — the foundation of slowing CKD
- Taking medications as prescribed — some protect the kidneys directly
- Working with a dietitian — diet can play a meaningful role, and a professional can tailor it to your stage
- Staying active in ways your doctor approves
- Keeping regular lab appointments so changes are caught early
Because everyone's situation is different, your doctor and possibly a nephrologist should design the plan that is right for you. For those who reach later stages, our companion guide on the emotional side of dialysis may be helpful.
How Medicare Coverage Can Help
Medicare covers a wide range of kidney-related care, from routine lab work and doctor visits to dialysis and transplant services when they are needed. For people with a qualifying chronic condition such as end-stage renal disease, a Chronic Condition Special Needs Plan (C-SNP) can coordinate benefits, specialists, and drug coverage specifically around the condition.
Which plans are available — and which coordinate care best for your situation — depends on where you live. A licensed Medicare advisor can walk you through the options at no cost, so you can focus on your health rather than the paperwork.