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Microplastics and impaired male reproductive health—exploring biological pathways of harm: a narrative review
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This narrative review summarizes the evidence that microplastics may harm male reproductive health through oxidative stress, hormone disruption, inflammation, and direct damage to reproductive cells. While animal studies show concerning effects on sperm quality, testicular function, and fertility, human studies are still lacking. The review calls for urgent research on microplastic impacts on human male fertility and for policies to reduce microplastic exposure.
Current evidence suggests that microplastics may impair male reproductive health through mechanisms like oxidative stress, hormonal disruption, inflammation, and cellular damage. However, the lack of human studies highlights the urgent need for robust research to clarify their impact on human male infertility. Furthermore, this review underscores the necessity for continued research to elucidate molecular mechanisms, inform preventative strategies, and guide regulatory policies addressing microplastic pollution and its health implications.
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The Impact of Microplastics on Male Fertility
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Microplastics and nanoplastics accumulate in testicular tissue and disrupt spermatogenesis through oxidative stress, inflammation, endocrine disruption, and structural damage to reproductive cells, consistently impairing sperm quality in experimental models. With global plastic production accelerating alongside documented declines in semen quality, this review highlights microplastic exposure as a plausible environmental contributor to male infertility warranting urgent human study.
Microplastics Exposure Is Harmful to Male Reproductive Health
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This chapter reviewed evidence on how microplastic exposure may harm male reproductive health through multiple pathways including ingestion and inhalation. The study examined mechanisms by which microplastics may disrupt reproductive function, including hormonal interference, oxidative stress, and inflammation in reproductive tissues, suggesting that widespread environmental microplastic contamination warrants attention as a potential factor in male fertility concerns.
Micro- and nanoplastic exposure: male reproductive toxicity, underlying mechanisms, and research prospects
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This review summarizes existing research on how tiny plastic particles, which can enter the body through food, air, or skin, may harm male fertility. It describes proposed biological mechanisms, including cell damage, hormone disruption, and gut bacteria changes, linked to reduced sperm quality in studied models.
Microplastic Exposure and Male Infertility: Mechanisms, Effects on Semen Quality and Emerging Human Evidence
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This review summarizes research on tiny plastic particles found in human semen and testicular tissue. In rodent studies, exposure was linked to cell damage, hormone disruption, and reduced sperm count and quality; human studies show similar associations but are too limited to prove the particles cause male infertility.
Research Progress in Reproductive Toxicity of Micro- and Nanoplastics on Males and Its Mechanisms
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This review summarized research on the reproductive toxicity of micro- and nanoplastics (MNPs) in males, finding that MNPs accumulate in reproductive organs and cause toxicity through oxidative stress, hormonal disruption, and DNA damage, with implications for both animal and human reproductive health.
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