Chronic Kidney Disease (CKD): Managing Long-Term Renal Health in the UK

Chronic Kidney Disease (CKD) is a term used to describe a gradual loss of kidney function over time. In the UK, it is estimated that around 1 in 10 people have some form of CKD. The kidneys are vital for filtering waste products from the blood, regulating blood pressure, and maintaining bone health. When function declines, waste can build up in the body, leading to various health complications.

According to NHS and NICE (National Institute for Health and Care Excellence) guidelines, CKD is usually identified through blood and urine tests. It is a 'chronic' condition, meaning it is long-term, and while it cannot typically be cured, it can be effectively managed to prevent further damage. Most patients with CKD in the UK are managed within primary care by their GP.

One of the most challenging aspects of CKD is that it often has no symptoms in the early stages (Stages 1 to 3). Many people only discover they have a kidney issue during routine health checks for other conditions. As the disease progresses to Stage 4 or 5, symptoms may become more apparent:

• Tiredness and lethargy: A buildup of toxins can lead to fatigue.
• Oedema: Swollen ankles, feet, or hands due to fluid retention.
• Urinary changes: Needing to urinate more often, especially at night, or seeing blood in the urine.
• Shortness of breath: Often linked to fluid buildup or anaemia.
• Nausea: Feeling generally unwell or losing your appetite.

If you are experiencing persistent swelling or fatigue, it is advisable to speak to a GP online or in person to arrange the necessary diagnostic tests.

CKD is rarely caused by a single event; instead, it is usually the result of other long-term health problems that put a strain on the kidneys. In the UK, the leading causes include:

Hypertension (High Blood Pressure)

Uncontrolled high blood pressure is a major cause of kidney damage. The kidneys are highly vascular organs; high pressure damages the small blood vessels, preventing them from filtering blood effectively.

Diabetes

Both Type 1 and Type 2 diabetes can cause diabetic nephropathy, where high blood glucose levels damage the kidney's filtration units over many years.

Other Factors

• Family history of kidney disease.
• Glomerulonephritis (inflammation of the kidney).
• Long-term use of certain medications, such as non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen.
• Obesity and smoking.

UK clinicians use two primary measures to assess kidney health, as outlined by NICE:

• eGFR (Estimated Glomerular Filtration Rate): A blood test that measures how much blood the kidneys filter per minute. A 'normal' eGFR is usually above 90.
• ACR (Albumin:Creatinine Ratio): A urine test that checks for 'leakage' of protein (albumin) into the urine, which is an early sign of kidney damage.

CKD is staged from 1 to 5. Stage 1 indicates very mild damage with normal filtration, while Stage 5 (End-Stage Renal Disease) indicates that the kidneys have lost most of their function, potentially requiring dialysis or a transplant.

The primary goal of CKD management is to stop the condition from worsening. This is achieved through a combination of medication and lifestyle adjustments:

Blood Pressure Control

Maintaining a blood pressure reading of below 140/90 mmHg (or 130/80 mmHg if you have diabetes) is crucial. GPs often prescribe ACE inhibitors or ARBs, which have a protective effect on the kidneys.

Statins

People with CKD have a higher risk of cardiovascular disease. Statins are frequently recommended to lower cholesterol and protect the heart.

Lifestyle Changes

• Dietary adjustments: Reducing salt intake to less than 6g a day to lower blood pressure.
• Smoking cessation: Smoking accelerates kidney decline.
• Weight management: Maintaining a healthy BMI reduces the strain on the metabolic system.
• Exercise: Aim for at least 150 minutes of moderate activity per week.

If you have already been diagnosed with CKD or are at high risk due to diabetes or hypertension, an online doctor in the UK can provide valuable support. Managing a chronic condition requires regular reviews, and a digital consultation is often the most convenient way to discuss your health.

You should consider a GP consultation if:

• You have received blood test results and need an explanation of your eGFR levels.
• You need to review your blood pressure medication or request a repeat prescription.
• You are seeking advice on how to manage lifestyle changes alongside your condition.
• You need a sick note for work-related adjustments due to chronic fatigue or medical appointments.

Our clinicians can review your history, offer evidence-based advice aligned with NICE guidance, and help you navigate the long-term management of your renal health.