Chronic Kidney Disease Linked to Climate Change Emerges as Public Health Threat in India

Cases of chronic kidney disease of unknown origin (CKDu) are increasing across India, particularly among outdoor laborers exposed to extreme heat and humidity. As climate change intensifies, workers in agriculture, construction, sanitation, and salt pans face prolonged dehydration and heat stress, both linked to kidney injury.

A 64-year-old salt pan worker from Tamil Nadu, developed CKDu after years of toiling under 40°C temperatures without rest or hydration. He now undergoes costly dialysis twice a week, a burden shared by many rural families. Studies in Andhra Pradesh and Odisha suggest CKDu prevalence rates as high as 40–60% in some farming communities, with evidence pointing to heat stress as a primary driver.

Experts warn India lacks adequate workplace protections, such as mandated rest breaks, shade, and safe drinking water. Without systemic changes, they say, the disease could escalate into a national public health crisis, particularly among the poorest communities.

25-09-2025