Plastic Pollution and Child Health: A Narrative Review of Micro- and Nanoplastics, Additives, and Developmental Risks

Area of Science:

• Environmental Health
• Toxicology
• Pediatrics

Background:

• Increasing plastic production leads to widespread human exposure to microplastics (MPs), nanoplastics (NPs), and additives like bisphenols and phthalates.
• These contaminants are linked to toxic effects including oxidative stress, inflammation, and genotoxicity, potentially impacting fertility.
• Children are particularly vulnerable due to developmental stages and higher exposure relative to body weight.

Purpose of the Study:

• To review the adverse health effects of plastic-associated contaminants on human health, with a focus on children.
• To highlight knowledge gaps in understanding the full scope of plastic toxicity, including dose-response and long-term consequences.
• To advocate for precautionary measures and policy interventions to mitigate plastic-related risks.

Main Methods:

• Review of experimental and epidemiological studies on plastic exposure and health outcomes.
• Identification of exposure pathways from in utero to childhood.
• Synthesis of evidence on biological mechanisms and reported health effects.

Main Results:

• MPs, NPs, and additives are found in fetal tissues and after birth through various routes, impacting fetal development.
• Adverse effects include impaired fertility, altered pubertal development, neurodevelopmental issues, respiratory diseases, and metabolic disorders.
• Significant knowledge gaps persist regarding specific polymer toxicity, dose-response relationships, and long-term impacts.

Conclusions:

• Plastic-associated exposures pose potential risks to human health, particularly for developing children.
• Urgent need for precautionary measures, including reduced plastic use, stronger regulations, and public awareness.
• Further research is essential to define risks, guide safer alternatives, and inform protective policies.