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Micro- and Nanoplastics: Hidden Environmental Catalysts of Antimicrobial Resistance
Summary
Tiny plastic bits called microplastics and nanoplastics—created when everyday plastic waste breaks down from sun exposure, weather, and other natural forces—have spread throughout our water, soil, and air. This review paper explains how these particles form and travel so easily through the environment, raising concerns about their potential role in helping harmful bacteria become resistant to antibiotics. Understanding this hidden connection matters because antibiotic resistance is already a major public health threat, and widespread plastic pollution could be quietly making the problem worse.
Plastics have become an essential part of modern life due to their durability, flexibility, and low production cost. Since the beginning of large-scale plastic production in the 1950s, global plastic manufacturing has increased dramatically. Over time, environmental processes such as photo-oxidation, ultraviolet radiation, mechanical abrasion, and microbial activity break large plastic debris into smaller particles. These fragments are classified as microplastics (<5 mm) and nanoplastics (<100 nm). Because of their small size and large surface area, these particles are easily transported through water, soil, and air, making them widespread contaminants in both natural and human-made environments.