World Kidney Day, observed annually on the second Thursday of March, falls on March 12 this year. The theme for 2026, 'Kidney Health for All – Caring for People, Protecting the Planet,' underlines the need for a collective global effort to combat kidney disease, highlighting its environmental intersections.

Chronic Kidney Disease (CKD) has emerged as a major health crisis worldwide, affecting one in ten people. In China, the magnitude is staggering, with approximately 156 million individuals afflicted by CKD, the highest prevalence globally.

The kidneys play a crucial role in maintaining human homeostasis through complex structures and physiological functions. However, this complexity also makes them vulnerable to damage caused by various factors, including metabolic disorders, infections, and toxins, potentially leading to both CKD and Acute Kidney Injury.

Often presenting no symptoms in its initial stages, CKD can progress unnoticed until it results in severe health outcomes. Its ramifications extend beyond individual patients, impacting their families and communities while also increasing the risk of cardiovascular issues and deteriorating overall quality of life.

At the most advanced level, kidney failure necessitates life-sustaining treatments such as dialysis or transplantation. The burden of CKD is disproportionately shouldered by disadvantaged populations, amplifying existing global health inequities.

Prevention of CKD hinges on maintaining a healthy lifestyle, alongside early detection and screening. Adequate hydration and a balanced diet are particularly vital. Healthy adults should aim to ingest between 1,500 to 1,700 milliliters of water each day while avoiding prolonged urine retention.

Dietary recommendations include limiting daily salt intake to no more than 5 grams, with those suffering from hypertension advised to restrict it further to between 2-3 grams. Excessive sodium can elevate blood pressure and impose additional strain on the kidneys.

Adults also need to limit their added sugar intake to under 50 grams per day, ideally less than 25 grams, as high blood sugar levels can detrimentally affect kidney health. Avoiding foods rich in purines, like organ meats, is similarly important for maintaining kidney function.

Individuals with underlying conditions such as hypertension or diabetes face heightened risks of kidney issues. Dr. Liu Li, an associate chief physician at Peking University First Hospital, notes that kidney problems often stem from associated metabolic disorders.

Regular physical activity and consistent sleep patterns are key components of kidney health. The recommendation is to engage in at least 150 minutes of moderate aerobic exercise weekly and maintain a sleep routine of seven to eight hours each night.

Incorporating urinalysis and kidney function tests into annual health checkups is important for all adults. High-risk individuals, including those with a family history of kidney disease, should consider more frequent screenings to catch potential issues early on.