What heavy metals have been found in Cauvery river fish?

Recent studies have detected elevated levels of heavy metals like cadmium, lead, chromium, copper, and zinc in fish from the Cauvery river.

What are the health risks of eating contaminated Cauvery fish?

Long-term consumption can lead to cumulative non-carcinogenic and carcinogenic effects, potentially causing issues with the brain, kidneys, bones, and nervous system.

Are there alternatives to eating fish from the Cauvery river?

Yes, nutritionists suggest eggs, milk products, pulses, mushrooms, and seasonal vegetables as alternative protein sources.

Home / Environment / Cauvery Fish Tainted: Heavy Metals Pose Health Threat

Cauvery Fish Tainted: Heavy Metals Pose Health Threat

21 Dec

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Summary

Elevated heavy metals found in fish from Tamil Nadu's Cauvery river.
Long-term exposure to cadmium and lead may cause health issues.
Contaminated fish is a key protein source for many low-income families.

Cauvery Fish Tainted: Heavy Metals Pose Health Threat

Freshwater fish from the Cauvery river, a vital source of protein in Tamil Nadu and Karnataka villages, may now pose long-term health risks. Recent research by Bharathidasan University scientists has detected elevated levels of heavy metals, such as cadmium and lead, in fish across multiple river stretches. While occasional intake might be safe, prolonged exposure is linked to cumulative non-carcinogenic and carcinogenic effects. The study, conducted between August 2023 and February 2024, analyzed fish and sediment samples, finding concentrations exceeding health risk thresholds in several instances.

This discovery adds to a growing body of evidence regarding chronic pollution in the Cauvery basin, attributed to industrial effluents and urban sewage. For many low-income households, Cauvery fish is an essential and affordable protein source, difficult to replace with costlier alternatives like meat or eggs. The contamination creates a One Health concern, impacting food chains and ultimately household diets, threatening nutrition security for vulnerable populations.