A recent study conducted by researchers from the Marine Biology Department of Cochin University, National Centre for Coastal Research, and Ministry of Earth Sciences has raised serious concerns about the safety of consuming fish and shellfish from Kochi’s estuary. The study found alarming levels of carcinogenic heavy metals such as zinc, cadmium, and chromium in several species of fish and shellfish, posing a significant threat to human health.
During non-monsoon periods, water flow in the estuary decreases, leading to the accumulation of heavy metals in the water, sediment, and biota. The research focused on commonly found species in the area, including Manangu, Kayalkatla, Karimeen, and others. Lead author Neethu K V highlighted the study’s focus on the human health risk posed by long-term consumption of contaminated food.
Chromium was found to have the highest accumulation in herbivores, while cadmium was predominant in filter feeders like fish and clams, exceeding safety standards set by regulatory authorities. The year-long study collected samples from different zones of the estuary during various seasons and analyzed them for heavy metal content
The research team emphasized the urgent need for regular monitoring and risk assessment of heavy metals in seafood resources along coastal areas. They called for concerted efforts to mitigate contamination and safeguard both ecological integrity and human health. The implications of this study extend beyond scientific discourse, emphasizing the importance of environmental stewardship and sustainable management practices.
This study serves as a wake-up call for policymakers, regulatory agencies, and coastal communities to prioritize efforts to mitigate heavy metal contamination and ensure the safety of seafood consumption. With the health and well-being of both ecosystems and individuals at stake, urgent action is needed to address this pressing issue.
Source-TOI