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Microplastics and Human Health: A Global Public Health Crisis

Indian Journal of Community Medicine 2026
P. Lal, Amit Yadav, Yogesh Pratap Singh

Summary

This review of existing research shows that tiny plastic particles smaller than 5mm are now found everywhere in our environment and may pose serious health risks when we breathe or eat them. These microplastics act like magnets for toxic chemicals, and workers exposed to high levels already show increased rates of lung disease and cancer. The authors argue we need immediate global action to reduce plastic pollution before these health effects become widespread in the general population.

Body Systems

Abstract Microplastics, particles smaller than 5 mm, represent an unprecedented global health threat requiring immediate interventions. Ubiquitous environmental contamination exposes humans through food, air, and continuous contact pathways. These particles function as toxic chemical magnets, concentrating pollutants manifold the environmental levels. Workers in specific industries and trades are exposed to even higher levels of exposure and reveal severe health effects, such as increased lung disease rates and cancer risks. Several industry workers provide critical evidence of plastic-induced pathology, including fatal respiratory scarring. Current regulatory frameworks inadequately address complex particle–chemical mixtures, while knowledge gaps persist regarding synergistic effects, nanoplastics, and vulnerable populations. Immediate coordinated international action is essential to prevent irreversible health consequences of exposure to plastics. The Global Plastics Treaty, currently under negotiation, offers the opportunity to address the massive yet unrecognized public health challenge. Public health professionals must create protocols to identify health outcomes and disease burdens linked with plastic exposures. Public health and medical practitioners must also support the efforts of environmental and consumer groups to reduce plastic pollution.

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