Andhra CM warns of cancer risk from urea overuse

The risks associated with the overuse of nitrogen fertilizers, like urea, are not limited to farmers; they extend to consumers as well, affecting public health on a broader scale. While farmers face direct exposure risks, consumers are primarily impacted through the contamination of food and water.

When farmers apply more urea than crops can absorb, the excess nitrogen doesn't just go to waste. It becomes an environmental and health hazard through a process called nitrate leaching.

• Nitrate contamination: The unabsorbed nitrogen from urea seeps through the soil and into groundwater. This process can lead to alarmingly high concentrations of nitrates in aquifers, which serve as a source for drinking water.

• Formation of carcinogens: When humans consume this nitrate-contaminated water or vegetables grown in such soil, the body can convert the nitrates into N-nitroso compounds. These compounds are known carcinogens and have been linked to an increased risk of several types of cancer, including stomach, bladder, and colorectal cancer.

The health concerns are not theoretical. Studies in regions with a history of heavy fertilizer use, such as Punjab, have shown a correlation between agricultural practices and rising cancer rates. This has led to the area being referred to as a "cancer belt."

To mitigate these serious risks, agricultural experts and government officials are advocating for a shift to more sustainable farming practices. These include:

• Precision agriculture: Using soil analysis to determine the exact amount of fertilizer needed for a crop, rather than applying it indiscriminately.

• Alternative nutrients: Providing farmers with micronutrients and organic supplements that can improve soil health and crop yield without the risks associated with excessive chemical fertilizer use.

This approach not only protects public health but can also save farmers money by reducing their reliance on expensive fertilizers, creating a more sustainable and healthier agricultural system for everyone.