Microplastic Pollutants in Aquatic Ecosystems: Present and Future Challenges

Summary

This review synthesizes evidence on microplastics as a widespread and growing contaminant found across marine, freshwater, terrestrial, and atmospheric environments. Organisms at every level of the food chain ingest microplastics, which cause physical harm, oxidative stress, and reproductive disruption, while also acting as carriers for toxic chemicals and pathogens. For humans, exposure via contaminated food, water, and air is well-documented — microplastics have been found in blood and tissues — though direct causal health links are still being established, making further research a priority.