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Impacts of Plastics on Human Health: Risks, Mechanisms, and Future Directions
Summary
This review pulls together existing research showing that plastics and their chemicals—including tiny microplastics and even smaller nanoplastics—are turning up in our air, water, food, and even inside our bodies, where they've been linked to hormone disruption, fertility problems, metabolic issues, weakened immunity, and higher cancer risk. What makes this concerning is that these tiny plastic particles are small enough to slip past the body's natural defenses, build up in organs, and even carry harmful chemicals and germs along with them. The takeaway: reducing plastic exposure through better alternatives, smarter waste management, and stronger regul
Plastics have become indispensable in modern society due to their versatility, durability, and low production cost; however, their widespread use has raised serious concerns regarding human health and environmental safety. Plastics and plastic-derived chemicals such as bisphenols, phthalates, flame retardants, and microplastics have been increasingly detected in air, water, food, and human tissues. Exposure to these substances is associated with adverse health effects including endocrine disruption, reproductive disorders, metabolic diseases, immune dysfunction, neurotoxicity, and increased cancer risk. Microplastics and nano-plastics, in particular, pose emerging threats due to their ability to penetrate biological barriers, accumulate in organs, and act as vectors for toxic chemicals and pathogenic microorganisms.This chapter critically examines the pathways of human exposure to plastics, their toxicological impacts, and the underlying mechanisms of plastic-induced health hazards. Furthermore, it discusses future prospects focusing on sustainable alternatives, biodegradable materials, green chemistry approaches, improved waste management strategies, and strengthened regulatory frameworks. Advancements in public awareness, interdisciplinary research, and policy-driven interventions are essential to mitigate plastic-related health risks. The chapter emphasizes the urgent need for a transition toward a circular economy and plastic-safe innovations to ensure long-term human health protection and environmental sustainability.