Chronic kidney disease is a gradual loss of kidney function that affects how the body balances fluids, electrolytes and waste products. It is common worldwide and often progresses silently for years before symptoms appear. Major risk factors include diabetes, high blood pressure, cardiovascular disease, obesity, smoking, older age and a family history of kidney problems. Environmental and occupational exposures, such as certain metals or solvents, as well as some medications, can also contribute.

Research shows that chronic kidney disease strongly increases the risk of cardiovascular events and early death, even in mild stages. Reduced kidney filtration rate and elevated albumin in the urine are key markers used to stage the condition and predict prognosis. Scientists are investigating how chronic inflammation, oxidative stress and damage to small blood vessels drive kidney scarring and loss of function.

Management focuses on slowing progression and reducing complications. Tight control of blood pressure and blood sugar, along with medications that block the renin angiotensin aldosterone system, can protect kidney tissue. Newer drugs, especially sodium glucose cotransporter 2 inhibitors and nonsteroidal mineralocorticoid receptor antagonists, have shown benefits in slowing decline and improving cardiovascular outcomes.

Dietary measures, such as moderating protein intake, reducing salt and maintaining a healthy weight, are important. Avoiding nephrotoxic drugs and monitoring kidney function in at risk patients are critical preventive strategies. Research is ongoing into biomarkers for earlier detection, personalized medicine approaches and regenerative therapies that might repair damaged kidneys and reduce the need for dialysis or transplantation.