Kidney Disease Life Expectancy: The 5 Stages

Kidney disease can lead to a reduction in life expectancy. How much of a reduction? It depends on several factors, especially a person’s age, sex, overall health, and the stage of the disease. Thanks to extensive research, doctors have a better understanding of how chronic kidney disease progresses and how it may affect long-term health.

Understanding poor kidney function in the elderly can help patients and caregivers recognize the factors that influence kidney health and treatment decisions.

Nevertheless, it’s important to keep in mind that every person is different—not just in terms of personality, but in terms of genetics, current health condition, and so forth. Life expectancy estimates can make no guarantees, but they may provide a general outlook.

The Stages of Kidney Disease

How many stages of kidney disease are there? It’s a little complicated. While there are five primary stages of chronic kidney disease (CKD), the third stage can be broken into two sub-stages.

Each stage is determined primarily by estimated glomerular filtration rate (eGFR), which indicates how well the kidneys are filtering blood. Doctors also consider evidence of kidney damage, including urine albumin levels, when assessing the condition.

Stage 1 and 2: Early Warnings

Stage 1 indicates a person with an eGFR of 90 mL/min/1.73 m² or higher, along with evidence of kidney damage.

The second stage is indicated by an eGFR between 60 and 89 mL/min/1.73 m², also with evidence of kidney damage.

In these early stages, many people experience few or no noticeable symptoms. An eGFR in these ranges does not automatically indicate chronic kidney disease unless other evidence of kidney damage is present.

Recognizing the signs of poor kidney function and attending regular medical checkups can help identify kidney problems before they progress.

Stages 3, 4, and 5: Nearing Kidney Failure

Stage 3 indicates a moderate reduction in kidney function and is divided into two sub-stages:

• Stage 3a: eGFR between 45 and 59 mL/min/1.73 m².
• Stage 3b: eGFR between 30 and 44 mL/min/1.73 m².

Stage 4 indicates a severe reduction in kidney function, with an eGFR between 15 and 29 mL/min/1.73 m².

Stage 5 indicates kidney failure, with an eGFR below 15 mL/min/1.73 m².

As kidney function declines, symptoms such as fatigue, swelling, nausea, and changes in urination may become more noticeable. Understanding kidney failure in the elderly can help families recognize symptoms that may require additional medical attention.

However, not everyone with stage 3 or stage 4 kidney disease will progress to kidney failure. The rate of progression varies considerably depending on the underlying cause, other medical conditions, and treatment.

Life Expectancy by Sex

As much as anything else, life expectancy for kidney disease depends on a person’s age and sex.

Population studies have found differences in life expectancy between men and women living with chronic kidney disease. Women generally have a longer average life expectancy than men, although the size of this difference varies by age, disease severity, and other health factors.

For example, a 60-year-old man with early-stage kidney disease may have a substantially different prognosis from someone of the same age with advanced kidney disease, cardiovascular complications, or diabetes.

The same applies to women. Although women may have a longer average life expectancy at some stages of kidney disease, individual outcomes cannot be determined from sex and disease stage alone.

Rather than relying on a single estimate, patients should discuss their kidney function, urine albumin levels, and overall health with their healthcare provider to better understand their prognosis.

Life Expectancy by Age

Age changes everything.

A 70-year-old with chronic kidney disease will generally have a different life expectancy from a 40-year-old with the same stage of the condition. However, age alone does not determine how quickly kidney disease will progress.

Other factors, including blood pressure, diabetes, cardiovascular health, and the underlying cause of kidney damage, can significantly influence outcomes.

Some older adults remain in the same stage of kidney disease for years, while others experience a more rapid decline in kidney function.

For this reason, life expectancy estimates should be viewed as population-level averages rather than predictions of how long a particular person will live.

Stage Five

Stage 5 kidney disease indicates kidney failure and may require dialysis or a kidney transplant, depending on the individual’s symptoms, overall health, treatment goals, and clinical circumstances.

Five decades ago, treatment options for advanced kidney failure were much more limited. These days, things are quite a bit different.

According to the National Kidney Foundation, the average life expectancy for a patient on dialysis is approximately 5–10 years, although some people live considerably longer. Outcomes vary widely based on age, other health conditions, and individual circumstances.

For older adults considering dialysis, understanding the pros and cons of dialysis in elderly adults can help patients and families make informed decisions about treatment.

Dialysis is not necessarily the best option for every person with advanced kidney disease. Some patients may choose conservative kidney management focused on symptom relief and quality of life after discussing the available options with their medical team.

For families supporting a loved one who receives dialysis, learning about caring for someone on dialysis can provide practical guidance on treatment routines, daily care, and common challenges.

Keeping Healthy Kidneys

Age and health problems can impair your ability to endure kidney disease. While chronic kidney disease does not always have a cure, there are things you can do to learn to manage kidney disease.

Understanding whether kidney disease can be reversed can also help patients distinguish between kidney conditions that may improve with treatment and chronic damage that may be permanent.

Some important steps for protecting kidney health include:

• Managing blood pressure: Following appropriate blood pressure guidelines for seniors can help reduce the risk of additional kidney damage.
• Controlling blood sugar: For individuals with diabetes, managing diabetes in the elderly is important because prolonged high blood sugar can damage the kidneys.
• Following medical advice: Taking prescribed medications as directed and attending regular appointments can help monitor kidney function.
• Maintaining healthy habits: Eating a kidney-appropriate diet, staying physically active when possible, and following individualized fluid recommendations may support overall health.

Patients and caregivers may also find it helpful to prepare questions to ask a kidney doctor before appointments, particularly when discussing treatment options or changes in kidney function.

If there’s one thing this information should make clear, it’s that taking steps to slow the progression of kidney disease can help preserve health, maintain quality of life, and potentially improve long-term outcomes.

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