We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Microplastic contamination in freshwater fish and human health implications: a global and Indian perspective
Summary
This review pulls together existing research showing that freshwater fish—including popular food sources—are widely contaminated with tiny plastic particles called microplastics, which end up not just in their guts but in muscle tissue, the part we actually eat. Since these plastics can carry harmful chemicals and may cause damage in fish like inflammation and hormone disruption, eating contaminated fish could pose similar risks to people, though scientists still need better, more consistent testing methods to fully understand the danger. The bottom line: plastic pollution in rivers and lakes isn't just an environmental problem—it may be quietly making its way onto your din
Microplastic (MP) pollution has emerged as a pervasive threat to freshwater ecosystems worldwide, with increasing evidence of contamination in freshwater fish that serve critical ecological, economic, and nutritional roles. This review synthesizes current knowledge on the sources, pathways, detection methodologies, occurrence, tissue distribution, ecotoxicological effects, and human health implications of microplastics in freshwater fish. Major sources of MPs include urban wastewater, industrial effluents, agricultural runoff, aquaculture activities, and atmospheric deposition, which facilitate their entry into rivers, lakes, reservoirs, and wetlands. Advances in analytical techniques such as Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, and pyrolysis-gas chromatography/mass spectrometry have improved MP detection; however, methodological inconsistencies continue to hinder data comparability. Globally, freshwater fish frequently ingest MPs, with fibers and fragments being the dominant morphotypes and polyethylene, polypropylene, polyethylene terephthalate, and polyamide the most common polymers. Beyond the gastrointestinal tract, MPs have been detected in gills, liver, muscle, gonads, and eggs, indicating potential translocation and reproductive transfer. Exposure to MPs can induce oxidative stress, tissue damage, metabolic disturbances, and reproductive impairment in fish. Furthermore, consumption of contaminated fish may expose humans to MPs and associated pollutants, raising concerns regarding food safety and public health. The review identifies key research gaps and highlights the need for standardized methodologies, long-term monitoring, risk assessment frameworks, and integrated mitigation strategies to protect freshwater biodiversity, fisheries, and food security.