Exploring the detrimental effects of nanoplastics on ecosystems and human health

Nanoplastics (NPs), defined as plastic particles smaller than 1 μm, are emerging as an environmental contaminant on a worldwide scale, owing to heightened demand and inadequate waste management of plastics. NPs have been observed in terrestrial and aquatic systems from agricultural leaching, atmospheric transport, as well as the fragmentation of larger plastic waste. Industrial wastes discharged into canals and streams and effluent from sewage wastes add to pollution loading of the environment. They impair water quality, change habitat structure and functioning, and affect ecosystems. The biological impacts of NPs intensify these problems because of their high adsorbing ability within biological systems. These NPs of smaller sizes could pass across biological membranes and accumulate in tissues or have systemic effects. The existence of NPs is also identified in some of the most isolated locations such as polar ice, mountaintops, and human biological specimens. This review examines the interactions of NPs with the environment, highlighting their potential to disrupt the balance of ecosystems and affect human health as well as biological systems. Thus, this sheds light on the necessity of coordinated research to elucidate the toxicological mechanisms at play and to apply these insights in developing effective strategies to mitigate plastic pollution.