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Micro/nanoplastic-induced alterations in cellular fate and full-cycle spermatogenesis: A mechanistic review and perspective on intergenerational risks
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This review pulls together animal and lab research suggesting that tiny plastic particles (microplastics and nanoplastics) can slip past the body's protective barriers in the testes and disrupt sperm production at multiple stages, damaging cell energy production and triggering harmful inflammation. Some studies even hint that this damage could potentially be passed down to future generations, though this research is still in early, preclinical stages and hasn't yet been confirmed in humans. Given how widespread plastic pollution is in our food, water, and air, this is an important area to watch as scientists work to understand what it might mean for human fertility.
Micro/nanoplastics (MNPs), ranging from 25 nm to 10 μm, have emerged as ubiquitous environmental pollutants, with an increasing body of research exploring their potential risks to male reproductive health. This review provides a synthesis of the observed impacts of MNPs on spermatogenesis, focusing on cellular fate, homeostatic disruption, and potential intergenerational consequences. Evidence from experimental models, utilizing dosages from 50 μg/kg/day to 75 mg/kg/day, suggests that MNPs may breach the blood-testis barrier and are associated with stage-specific impairments throughout the spermatogenic process-from spermatogonial proliferation to final sperm maturation.Proposed toxicological mechanisms identified in these studies include mitochondrial dysfunction, metabolic reprogramming, and the activation of various cell death pathways. Furthermore, experimental data indicate that MNPs may perturb the reproductive microenvironment by affecting Sertoli and Leydig cell functions and contributing to systemic inflammation. Notably, preclinical observations suggest that MNP-associated reproductive damage may have the capacity for intergenerational transmission. These insights provide a preliminary scientific framework for assessing MNP-related male reproductive risks and highlight the need for further research into targeted intervention strategies, as well as the continued validation of these findings in human clinical contexts.
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Microplastics and nanoplastics: potential implications for testicular inflammation in male mammals
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This review pulls together animal research showing that tiny plastic particles can reach the testes and trigger inflammation, damage protective barriers, and disrupt hormone production. While these effects have mostly been studied in rodents, they raise real concerns about male fertility. More research is needed to confirm how this applies to humans.
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 and male reproductive toxicity: Research progress on injury pathways and regulatory mechanisms
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This review pulls together existing research showing that tiny plastic particles from our environment can build up in male reproductive organs, where they've been linked to lower sperm quality in humans. Studies in animals and cells suggest these plastics may sneak past the body's natural defenses in the testicles, causing cell damage, inflammation, and hormone disruption that harms sperm production. While more research is needed to confirm exactly how much risk this poses to human fertility, the findings add to growing concerns about everyday plastic exposure and reproductive health.
Effects of micro- and nanoplastics exposure on male semen quality and associated mechanisms: A research progress review
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Tiny plastic particles called micro- and nanoplastics are showing up everywhere, including inside our bodies—and this review of existing research suggests they can build up in the testes and semen, where they're linked to lower sperm count, weaker sperm movement, and abnormally shaped sperm. Scientists think these plastics may harm sperm by triggering cell stress, inflammation, and hormone disruption, though most evidence so far comes from animal and lab studies rather than large human trials. Given the ongoing global decline in male fertility, this is a good reason to reduce unnecessary plastic exposure while researchers work to confir
Unveiling the Insidious Role of Polystyrene Nanoplastics in Compromising Male Fertility
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This review pulls together existing research showing that tiny plastic particles called nanoplastics, already found in human semen and testicular tissue, may damage sperm production by causing cell stress, disrupting hormones, and even altering gut bacteria that support reproductive health. The risk grows when these plastics mix with other pollutants like heavy metals, suggesting real-world exposure could be more harmful than lab studies of plastics alone. While more research is needed, this adds to growing concern that everyday plastic pollution may be quietly contributing to declining male fertility worldwide.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.