Identifying the signs of poor kidney health | 3 min read

Why kidney health matters

Your kidneys play a crucial role in filtering waste products, excess fluids, and toxins from your bloodstream. They also help regulate blood pressure, maintain bone strength, and produce red blood cells. When kidney function declines, your body may struggle to maintain these essential functions, which can lead to serious complications if left unmanaged.

Early warning signs to watch out for

Unfortunately, kidney disease often develops quietly. By the time symptoms become apparent, significant damage may have already occurred. That’s why paying attention to the early warning signs is so important.

Fatigue and difficulty concentrating

A decline in kidney function can lead to a build-up of toxins and impurities in the blood. This may cause individuals to feel tired, weak, or mentally foggy. If you find yourself unusually exhausted even after a whole night’s sleep, it may be worth exploring further.

Changes in urination patterns

Your kidneys are responsible for producing urine, so any change in urination, whether frequency, colour, or volume, could indicate a problem. Look out for:

  • Increased or decreased urination.
  • Foamy or bubbly urine.
  • Dark-coloured urine.
  • Blood in urine.
  • Frequent urination at night.

Swelling in the legs, ankles, or feet

When the kidneys can’t eliminate excess fluid properly, it may accumulate in the body, particularly in the lower limbs. This condition is known as oedema and could be a sign of poor kidney function.

 Persistent puffiness around the eyes

This may be one of the earlier signs of protein leaking into the urine, a symptom of kidney damage. If the puffiness continues even after adequate sleep, it could be more than just fatigue.

Muscle cramps and twitches

Electrolyte imbalances caused by impaired kidney function can result in muscle cramps. A lack of calcium and poor control of phosphorus levels may be to blame.

More advanced symptoms

As kidney disease progresses, the symptoms may become more severe and harder to ignore.

Nausea, vomiting, and loss of appetite

The accumulation of waste products can make you feel unwell, especially during the later stages of kidney disease. This can lead to a reduced appetite, weight loss, and gastrointestinal discomfort.

Shortness of breath

Excess fluid in the lungs or anaemia caused by kidney disease may result in laboured breathing. If you feel breathless after mild activity, or even at rest, it warrants investigation.

High blood pressure

Poor kidney function can contribute to uncontrolled high blood pressure, which in turn can worsen kidney damage in a vicious cycle. If your blood pressure remains high despite medication, further assessment may be needed.

For additional information, read more articles relevant to kidney health below: 

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When to see a doctor

Because the symptoms of kidney disease can overlap with other conditions, it’s essential to consult a healthcare provider if you experience any of the above. Simple blood and urine tests can help assess kidney function and detect problems early. If diagnosed in the early stages, treatment and lifestyle changes can slow progression and help maintain quality of life.

Take action today

Don’t ignore the signs. If you have concerns about your kidney health, speak to a healthcare provider. Book an online appointment with Intercare today and take the first step toward proactive kidney care.

Reviewed: 2025

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