Kidney disease is becoming a major health concern around the world, yet many people remain unaware that they have it until the condition becomes serious. One reason for this is that early symptoms are often subtle and easy to miss. In many cases, doctors only suspect kidney issues after noticing physical signs such as swelling in the legs or certain nerve-related changes in the body.
Health experts say that kidney disease can often be prevented or slowed down if it is detected early. Simple daily habits like avoiding self-medication, drinking enough water, exercising regularly, and maintaining a healthy weight can make a significant difference in protecting kidney health.
Medical experts highlighted several warning signs that may appear in the legs and could indicate underlying kidney problems.
One of the most common signs is swelling in the legs, ankles, or feet, a condition known as peripheral oedema. This happens when excess fluid builds up in body tissues. Normally, healthy kidneys remove extra salt and water from the body through urine. However, when the kidneys do not function properly, fluid can accumulate, often collecting in the lower parts of the body due to gravity. Many people notice puffy ankles by evening, deep sock marks on the legs, or swelling that leaves an indentation when pressed. Persistent swelling in the legs should never be ignored, as it may signal kidney, heart, or liver problems.
Some people also experience a heavy or tight feeling in their legs, especially towards the end of the day. This sensation can occur when fluid balance in the body is disrupted because the kidneys are not filtering properly. Experts say that constant heaviness or swelling in the lower limbs should be checked by a doctor, as it may indicate kidney or circulation-related issues.
Kidney disease can also affect muscle strength. Studies on patients with chronic kidney disease have shown that those experiencing leg swelling often have weaker leg muscles and poorer balance. This can happen due to several factors, including electrolyte imbalances, inflammation, loss of protein through urine, and reduced physical activity caused by fatigue.
Another possible symptom is numbness, tingling, or a burning sensation in the legs. When the kidneys fail to remove toxins from the body effectively, these toxins can accumulate in the blood and damage the nervous system. This condition, known as peripheral neuropathy, is particularly common among people with advanced kidney disease or those on dialysis. Symptoms usually begin in the feet and lower legs and may gradually spread upward.
Restless Legs Syndrome is another condition frequently linked to kidney disease. People with this problem often feel an uncontrollable urge to move their legs, especially while resting or at night. The condition can significantly disturb sleep and affect overall quality of life. Experts believe it may be caused by nerve dysfunction, iron imbalance, and metabolic changes associated with kidney failure.
Medical experts advise seeking medical attention if leg-related symptoms occur along with other warning signs such as persistent swelling, reduced urine output, fatigue, shortness of breath, or noticeable changes in urination patterns. Simple tests—including serum creatinine, estimated glomerular filtration rate (eGFR), and urine albumin tests—can help detect kidney disease at an early stage and allow timely treatment.
