Chronic kidney disease has quietly become one of the world’s biggest health challenges.
While conditions such as cancer, heart disease, and diabetes often receive widespread attention, kidney disease is affecting a growing number of people and causing more deaths than ever before.
According to a major international study published in The Lancet, the number of people living with chronic kidney disease increased from 378 million in 1990 to 788 million in 2023. This dramatic rise means that roughly one in seven adults around the world is now living with some form of kidney damage.
The study was led by researchers from NYU Langone Health, the University of Glasgow, and the Institute for Health Metrics and Evaluation at the University of Washington.
Their work provides one of the most complete pictures of kidney disease worldwide in nearly ten years. The researchers analyzed information from 2,230 scientific studies and health databases covering 133 countries.
The kidneys play a vital role in keeping the body healthy. These two bean-shaped organs filter waste products and extra fluid from the blood, help control blood pressure, and maintain the balance of important minerals.
When the kidneys become damaged, they gradually lose their ability to perform these tasks. In the early stages, most people notice no symptoms at all. This is one reason kidney disease is often called a silent disease.
As kidney function declines, however, serious health problems can develop. In advanced stages, patients may require dialysis, which uses a machine to filter the blood, or a kidney transplant. Without treatment, severe kidney failure can be life-threatening.
The new analysis found that chronic kidney disease caused about 1.5 million deaths in 2023. After adjusting for age differences across populations, death rates were more than six percent higher than they were three decades earlier. As populations continue to grow older, experts warn that the burden of kidney disease is likely to increase further.
The study revealed that kidney disease affects much more than the kidneys themselves. Reduced kidney function significantly increases the risk of heart disease. Researchers estimated that impaired kidney health contributed to around 12 percent of cardiovascular deaths worldwide.
This connection highlights how closely different organs work together and why kidney health is essential for overall wellbeing.
Several factors are driving the rise in kidney disease. High blood sugar from diabetes remains one of the biggest causes. High blood pressure and obesity also play major roles. As rates of these conditions continue to increase globally, more people are developing kidney damage.
One encouraging finding is that most people identified in the study were still in the earlier stages of the disease. This creates an opportunity for prevention and treatment. Lifestyle changes such as healthier eating, regular physical activity, blood pressure control, and diabetes management can slow disease progression.
New medications introduced in recent years have also shown promise in protecting kidney function while reducing the risk of heart attack, stroke, and heart failure.
Unfortunately, access to diagnosis and treatment remains uneven. Many people are never tested for kidney disease until it has already reached an advanced stage. This problem is especially severe in lower-income regions where dialysis and transplantation services may be limited or unaffordable.
The findings helped convince the World Health Organization to place chronic kidney disease on its agenda for reducing premature deaths from noncommunicable diseases. Researchers hope the report will encourage governments and healthcare systems to invest more in early detection and prevention programs.
Looking ahead, experts believe kidney disease could become an even larger global challenge. While deaths from some major cardiovascular diseases are expected to decline, projections suggest kidney disease deaths may continue rising in the coming decades.
The study paints a clear picture. Chronic kidney disease is common, dangerous, and often overlooked. Yet it is also a condition that can often be detected early and managed effectively. Greater awareness, wider testing, and better access to treatment could help millions of people avoid severe complications and live longer, healthier lives.
Study review and analysis: This research is particularly valuable because it combines data from a large number of countries and studies, making the findings more reliable than many smaller investigations.
One limitation is that kidney disease is frequently underdiagnosed, meaning the true number of affected people may be even higher than reported.
The study does not prove that all observed trends are caused by specific risk factors, but it strongly highlights the growing global burden of kidney disease and the urgent need for earlier screening and treatment strategies.
Source: NYU Langone Health.
