Kidney disease is a common but often overlooked health problem, especially in older adults.
It usually develops slowly, and many people do not notice anything is wrong until the kidneys have already been damaged. Learning to recognise the early warning signs can help people seek treatment before the disease becomes much more serious.
The kidneys are two bean-shaped organs that perform many important jobs every day.
They remove waste products and extra fluid from the blood, help control blood pressure, keep minerals balanced, and produce hormones that support healthy red blood cells and strong bones. When the kidneys stop working properly, these important functions begin to suffer.
As people get older, kidney function naturally declines to some extent. Health conditions such as high blood pressure and diabetes can speed up this process and greatly increase the risk of chronic kidney disease. Because these illnesses are common in older adults, regular health checks become even more important.
One of the biggest problems with kidney disease is that the early symptoms are often mild. Many people think they are simply feeling the effects of ageing and do not realise their kidneys may be struggling. This delay can allow the disease to become worse before it is diagnosed.
A change in urination is often one of the earliest warning signs. Some people may need to pass urine more often, especially at night, while others may notice they are producing less urine than usual. The urine may become darker, foamy, cloudy, or even contain blood, all of which should be checked by a doctor.
Swelling in the feet, ankles, legs, hands, or face is another common symptom. This happens because damaged kidneys cannot remove extra salt and water effectively, allowing fluid to build up in the body. Tight shoes, swollen fingers, or puffiness around the eyes may be early clues.
Feeling unusually tired or weak is also common. Diseased kidneys produce less of a hormone that helps the body make red blood cells, which can lead to anaemia. When fewer red blood cells carry oxygen around the body, people often feel exhausted, short of breath, or unable to do their usual activities.
Other symptoms may include poor sleep, itchy or dry skin, muscle cramps, loss of appetite, nausea, vomiting, trouble concentrating, or feeling unusually cold. These problems can develop because waste products and minerals are no longer being balanced properly in the body.
The good news is that kidney disease can often be detected with simple blood and urine tests. Doctors commonly measure creatinine in the blood to estimate how well the kidneys are filtering waste and check the urine for protein, which can be an early sign of kidney damage. Finding the disease early gives doctors more opportunities to slow its progress.
Treatment usually focuses on protecting the kidneys and preventing further damage. This may include controlling blood pressure and diabetes, eating a healthy diet, staying active, taking prescribed medicines, and avoiding smoking. In advanced cases, dialysis or a kidney transplant may be needed.
Recognising the warning signs early and having regular medical check-ups can make a major difference in protecting kidney health and maintaining a good quality of life.
If you care about kidney health, please read studies about how to protect your kidneys from diabetes, and drinking coffee could help reduce risk of kidney injury.
For more health information, please see recent studies about foods that may prevent recurrence of kidney stones, and eating nuts linked to lower risk of chronic kidney disease and death.
Copyright © 2026 Knowridge Science Report. All rights reserved.
