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The kidneys perform essential functions that include filtering waste products, regulating fluid and electrolyte balance, maintaining blood pressure, and producing hormones involved in red blood cell production. As people age, the risk of chronic kidney disease (CKD) increases, particularly among those with diabetes, hypertension, obesity, or cardiovascular disease. Because kidney disease often develops gradually with few obvious symptoms, recognising early kidney disease symptoms and seeking timely medical assessment may help identify problems before significant kidney function is lost.
Why Kidney Disease Often Goes Unnoticed
Chronic kidney disease is often called a “silent disease” because the kidneys have a large functional reserve. Healthy nephrons can compensate for damaged ones, allowing kidney function to remain relatively stable even as disease progresses. As a result, many people do not experience noticeable symptoms until kidney function has declined considerably. Globally, CKD affects an estimated 10% of adults, yet many individuals remain undiagnosed until routine blood or urine tests reveal abnormalities.
Early Symptoms That Should Not Be Ignored
Early kidney disease symptoms may include persistent fatigue, swelling around the eyes or ankles, changes in urination such as foamy urine, blood in the urine, increased nighttime urination, or reduced urine output. Some individuals may also experience high blood pressure, muscle cramps, poor appetite, nausea, or persistent itching as waste products accumulate and electrolyte balance becomes disrupted. While these symptoms can occur with other conditions, persistent or unexplained changes should be medically evaluated rather than dismissed as part of normal ageing.
Screening, Prevention, and Early Detection
Routine screening is particularly important for adults over 60 years old and individuals with diabetes, hypertension, obesity, recurrent kidney stones, cardiovascular disease, or a family history of kidney disease. Screening typically includes blood tests to measure serum creatinine and calculate the estimated glomerular filtration rate (eGFR), urine tests such as the urine albumin-to-creatinine ratio (uACR), blood pressure assessment, and kidney ultrasound when indicated. Detecting kidney disease early allows treatment to begin before permanent damage becomes more advanced.
Daily Care and Lifestyle Habits That Support Kidney Health
Maintaining healthy blood pressure and blood sugar levels remains one of the most effective ways to protect kidney function. Eating a balanced diet with moderate sodium intake, maintaining a healthy body weight, exercising for approximately 150 minutes each week, staying adequately hydrated, and avoiding unnecessary long-term use of non-steroidal anti-inflammatory drugs (NSAIDs) may help reduce further kidney injury. Individuals with established kidney disease may also require personalised dietary recommendations based on their stage of CKD.
Age-Related and Chronic Conditions Linked to Kidney Disease
Several chronic medical conditions increase the likelihood of developing kidney disease over time. Diabetes is the leading cause of CKD, affecting approximately 30% to 40% of people with diabetes, while long-standing hypertension damages the small blood vessels supplying the kidneys. Recurrent kidney stones, urinary obstruction caused by benign prostatic hyperplasia (BPH), obesity, and cardiovascular disease may also contribute to declining kidney function, making regular monitoring increasingly important as people age.
Prescription Versus Over-the-Counter Treatments
Treatment depends on the underlying cause and severity of kidney disease. Over-the-counter medications, such as paracetamol when appropriate, may relieve minor symptoms but do not treat chronic kidney disease, while prolonged NSAID use may increase the risk of kidney injury in susceptible individuals. Prescription medications, including ACE inhibitors, angiotensin receptor blockers (ARBs), and SGLT2 inhibitors, are commonly prescribed for suitable patients because they may reduce proteinuria by 30% to 50% and lower the risk of CKD progression by approximately 30% to 40% in selected populations.
| Treatment Type | Examples | Role |
| Over-the-counter | Paracetamol, oral rehydration solutions | May help relieve mild symptoms but do not treat chronic kidney disease. |
| Prescription | ACE inhibitors, ARBs, SGLT2 inhibitors, blood pressure and diabetes medications | Help manage underlying conditions and may slow progression of kidney disease in appropriately selected patients. |
In-Clinic Procedures
Depending on the suspected cause of kidney disease, a urologist may recommend investigations or procedures such as renal ultrasound, CT or MRI imaging, kidney biopsy, or urine flow studies. Patients with kidney stones causing obstruction may undergo minimally invasive procedures such as ureteroscopy with laser lithotripsy, while urinary obstruction from other causes may require temporary ureteric stenting or catheterisation. Individuals with advanced kidney disease may also be referred for dialysis access planning if kidney function continues to decline.
What Our Urologist Says
The clinic’s urologist emphasises that many patients assume fatigue, swelling, or urinary changes are simply part of getting older when they may actually indicate declining kidney function. Early assessment using blood tests, urine analysis, and appropriate imaging often provides valuable information about kidney health and allows treatment or monitoring to begin before more serious complications develop.
Putting This Into Practice
- Monitor your blood pressure regularly.
- Keep diabetes well controlled if applicable.
- Attend routine kidney screening if you have risk factors.
- Stay physically active most days of the week.
- Limit excessive dietary salt.
- Maintain a healthy body weight.
- Stay adequately hydrated unless advised otherwise.
- Avoid prolonged or unnecessary NSAID use.
- Report persistent urinary changes promptly.
- Keep regular follow-up appointments if you have known kidney disease.
When to Seek Professional Help
Seek medical assessment if you experience:
- Blood in the urine
- Persistent foamy urine
- Swelling of the legs, ankles, or face
- Ongoing fatigue without an obvious cause
- Recurrent kidney stones
- Persistent flank pain
- Difficulty passing urine
- Significantly reduced urine output
- High blood pressure that remains difficult to control
- Diabetes or hypertension without recent kidney screening
Commonly Asked Questions
Can chronic kidney disease develop without symptoms?
Yes. Many people with early CKD experience few or no noticeable symptoms because the kidneys can compensate for reduced function. Routine screening is often the only way to detect the condition before complications develop.
Is foamy urine always a sign of kidney disease?
Not necessarily. Foamy urine can occur temporarily due to concentrated urine or rapid urination, but persistent foaming may indicate protein leakage and should be evaluated with urine testing.
Can chronic kidney disease be cured?
Most chronic kidney disease cannot be reversed once permanent kidney damage has occurred. However, early diagnosis and appropriate treatment may slow progression and reduce the risk of complications.
How often should kidney function be checked?
Individuals with diabetes, hypertension, or other significant risk factors are commonly advised to undergo kidney function testing at least once a year, although testing frequency varies according to individual circumstances.
Does drinking more water prevent kidney disease?
Adequate hydration supports normal kidney function, but drinking excessive amounts of water has not been shown to prevent chronic kidney disease. Fluid intake should be tailored to individual health needs, particularly in people with advanced kidney disease.
Next Steps
Kidney disease often develops gradually, making routine screening and awareness of early symptoms particularly important for individuals with risk factors. Persistent urinary changes, swelling, fatigue, or elevated blood pressure should not be ignored, especially if they continue despite lifestyle modifications. If you are concerned about your kidney health or have ongoing symptoms, consider consulting a urologist for a comprehensive evaluation, appropriate investigations, and personalised recommendations based on your overall health and risk profile.
