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Dietary Phytochemicals as Multi-Target Defenders Against Plastic-Associated Toxicity
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This narrative review covers bisphenols, phthalates, PFAS and contaminants carried by microplastics, and their reported effects on hormones, oxidative balance, reproduction and thyroid function. It then surveys research on dietary phytochemicals such as polyphenols and flavonoids in relation to those effects.
Plastic-derived chemical additives, including bisphenols, phthalates, perfluoroalkyl substances (PFAS) and microplastic-associated contaminants, are now recognised as widespread environmental toxins that measurably affect endocrine signalling, oxidative balance, inflammation and metabolic homeostasis. Continuous exposure through food contact materials, consumer products, and environmental media raises concerns about long-term health effects. An increasing number of epidemiological and experimental studies are linking these exposures to metabolic disorders, reproductive dysfunction, neurodevelopmental alterations, and increased disease susceptibility throughout the lifespan. This narrative review summarises the latest evidence on the toxicological mechanisms of these compounds, with a focus on endocrine disruption, redox imbalance, reproductive impairment, thyroid hormone dysregulation and epigenetic modifications induced by plastic-derived chemicals. Literature was identified through searches of major scientific databases, including PubMed, Scopus, and Web of Science. Reference screening was also employed to complement these searches and ensure comprehensive coverage of vertebrate and invertebrate models. The inclusion criteria encompassed studies published within the last 10 years, focusing on experimental, experimental, and translational research. The review evaluates phytochemicals such as polyphenols, flavonoids, isoflavones, catechins, sulforaphane, and chlorogenic acid as natural agents that can mitigate the biological effects of plastic-derived toxicants. These compounds exhibit antioxidant, anti-inflammatory, and receptor-modulating properties that counteract pathways disrupted by BPA, phthalates, and PFAS. Experimental studies have demonstrated that phytochemicals can modulate oestrogen receptor activity, enhance detoxification systems, reduce oxidative biomarkers and mitigate epigenetic and metabolic alterations induced by micro- and nanoplastics. Emerging nutritional evidence suggests that diets high in polyphenols may reduce the biological impact of plastic-derived contaminants within the body, rather than reducing exposure itself. This effect appears to be especially relevant during sensitive developmental periods, such as the prenatal, early postnatal and adolescent stages.
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When male rats were exposed to polyethylene microplastics (the most common type found in packaging), they showed disrupted testosterone, thyroid hormones, and antioxidant defenses. A citrus compound called naringin partially reversed these harmful effects, suggesting both that microplastics can interfere with the hormonal system and that certain natural compounds might offer some protection.
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Researchers reviewed evidence that microplastics accumulate in prostate tissue at higher concentrations in malignant than benign samples and act as carriers for endocrine disruptors including bisphenols, phthalates, and PFAS, proposing that androgen receptor disruption, oxidative stress, and chronic inflammation form a plausible toxicity triad linking MP exposure to prostate carcinogenesis.
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This review examines how microplastics and nanoplastics trigger oxidative stress as a central mechanism of toxicity across multiple organ systems, including reproductive, cardiovascular, hepatic, and neurological tissues. The study highlights that these particles often carry endocrine-disrupting chemicals like bisphenol A and phthalates, which together generate reactive oxygen species, impair mitochondrial function, and compromise antioxidant defenses.
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This review summarizes how micro- and nanoplastics carry endocrine-disrupting chemicals that interfere with hormones controlling reproduction, thyroid function, metabolism, and brain development. The reproductive system is especially vulnerable, with studies showing that plastic particle exposure can cause oxidative stress, cell death, and infertility, raising serious concerns given how widespread these particles are in food and the environment.
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