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Maternal Micro- and Nanoplastic Exposure and Offspring Developmental Programming: A Systematic Review and DOHaD-Centred Mechanistic Evidence Map
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This study is actually a research plan, not results yet — scientists are designing a careful review of existing studies on whether tiny plastic particles (microplastics and nanoplastics) that a pregnant person is exposed to can cross the placenta and affect a baby's development. Rather than assuming plastics definitely harm babies, the researchers want to map out exactly what's been proven, what's just suspected, and what's still unknown, since current studies use very different methods that are hard to compare directly. Once completed, this review should give clearer answers about whether pregnant people need to worry about plastic exposure affecting their child's health — but for now, the science is still
This prospectively registered update will evaluate human and experimental evidence concerning maternal exposure to microplastics and nanoplastics (MNPs), placental uptake and dysfunction, molecular and cellular reprogramming, and developmental outcomes across offspring organs and systems. Rather than assuming a linear maternal-placental-offspring pathway, the review will construct a link-level DOHaD-centred mechanistic evidence map that distinguishes directly tested connections from indirect, contradictory, and missing links. Human observational associations, mammalian experimental evidence, supporting placental or organoid evidence, and non-mammalian bridging evidence will be synthesised separately. The review will use a high-sensitivity inception-to-date search, prespecified subgroup comparisons, outcome-level OHAT risk-of-bias assessment, a mechanistic-link confidence rubric, publication-status sensitivity analysis, and SWiM-guided structured qualitative synthesis. No meta-analysis will be conducted because substantial heterogeneity is anticipated in model, particle characteristics, dose metric, exposure window, experimental unit, and endpoint.
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Prenatal Microplastic Exposure and Congenital Structural Anomalies in Humans: A Scoping Review
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Scientists have found tiny plastic particles (microplastics) in placentas, amniotic fluid, and other tissues connected to pregnancy, raising concerns about whether they could affect a developing baby. This paper doesn't test that link itself, instead, it's a planning document for a future review that will map out what research already exists, checking whether scientists have actually studied a connection between microplastic exposure and birth defects, or just shown that plastics can reach the womb. The takeaway for now: we know plastics can get close to a fetus, but there isn't yet solid proof they cause structural birth defects, that's the exact question this planned review aims
Microplastic trafficking in maternal-fetal system: a systematic review and quantitative profiling linking particle characteristics to developmental biology
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This review pulls together existing studies to show that tiny plastic particles show up in placentas, breast milk, amniotic fluid, and even the uterine lining—suggesting babies can be exposed to microplastics before and after birth. The type and amount of plastic differed by body tissue, with the smallest particles (under 100 micrometers) most likely to cross the placenta, hinting that particle size and where it ends up in the body matter as much as how much plastic pollution someone is exposed to overall. While this doesn't yet prove these particles cause harm, it gives scientists a clearer roadmap for studying how plastic exposure might aff
Microplastic Exposure During Pregnancy: A Systematic Review of Risks to Maternal and Fetal Health
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This systematic review summarizes existing research on how microplastic exposure during pregnancy may affect mothers and developing babies. Studies suggest microplastics can cross the placental barrier, raising concerns about potential effects on fetal development, though more human research is needed to confirm specific risks.
Microplastic trafficking in maternal-fetal system: a systematic review and quantitative profiling linking particle characteristics to developmental biology
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This review pulls together existing research to show that tiny plastic particles show up not just randomly, but in specific patterns across the placenta, breast milk, amniotic fluid, and even the uterine lining — with the smallest particles (under 100 micrometers) most likely to cross into the fetus. This matters because it suggests plastic exposure during pregnancy isn't just about how much plastic is in the environment, but about how particle size and type interact with the body's own biology, meaning some stages of pregnancy and breastfeeding may carry more risk than others. More research is still needed to understand what this exposure actually means for babies' health.
Impact of prenatal micro/nanoplastics exposure on intrauterine development and growth: a systematic review
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This systematic review examines how exposure to micro- and nanoplastics during pregnancy may affect fetal development and growth. The research gathered evidence showing that tiny plastic particles can reach the placenta and potentially disrupt normal intrauterine development. While more research is needed, these findings raise important questions about protecting pregnant women from microplastic exposure through food, water, and air.
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