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Micro- and Nanoplastics, Gut Microbiome, and Reproductive Health: Scoping Review Protocol
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Scientists are mapping out what's already known about how tiny plastic particles we eat and breathe might disrupt gut bacteria and affect fertility or reproductive health. This paper is just the game plan for that review, not new results yet, but it highlights an important question: could plastic pollution in our bodies be messing with both our gut health and our ability to reproduce?
This component contains the protocol and methodological materials for a scoping review investigating the relationship between micro- and nanoplastic (MNP) exposure, alterations in the gut microbiota/microbiome or related intestinal environment, and reproductive health outcomes. The review maps available evidence, proposed biological mechanisms underlying the gut–reproductive axis, and major knowledge gaps. The review follows JBI methodological guidance for scoping reviews and is reported according to PRISMA-ScR.
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The Plastic Burden: How Microplastic Exposure Shapes Gut Microbiota, Immune Function, and Reproductive Outcomes – A Review
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Tiny plastic particles from our environment are showing up all over the human body—in blood, brains, and even placentas—and this review pulls together existing research on how they might disrupt our gut bacteria, trigger inflammation, and mess with reproductive health. One especially alarming trend: brain tissue samples from 2024 had 50% more microplastics than samples from 2016, suggesting our exposure is climbing fast. While scientists are still working out exactly how much harm this causes, the fact that these particles can pass from mother to baby raises real questions about long-term effects on future generations.
The Plastic Burden: How Microplastic Exposure Shapes Gut Microbiota, Immune Function, and Reproductive Outcomes – A Review
AI summary Read the abstract
Tiny plastic particles have made their way into our blood, brains, and even placentas, and this review pulls together existing research showing they may disrupt gut bacteria, trigger inflammation, and interfere with hormones tied to reproduction. Especially alarming: brain tissue samples from 2024 had 50% more microplastics than samples from 2016, suggesting our exposure is climbing fast. While scientists are still working out exactly how much harm this causes, the fact that these particles can pass to babies through the placenta makes this a health concern worth watching closely.
Micro‐ and nanoplastics in gastrointestinal disorders: Mapping the translational gap between exposure, biomonitoring, and pathogenic mechanisms
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Tiny plastic particles from our food, air, and water may be doing more than just passing through our bodies, this review of existing research suggests they can irritate the gut lining, trigger inflammation, and throw off the balance of healthy gut bacteria. While scientists haven't yet nailed down exactly how much exposure causes harm or the precise mechanisms involved, the evidence so far suggests these ever-present plastic particles could be a hidden contributor to digestive health problems, making it a research area worth watching.
Impact of microplastics on human health: A critical role of gut microbiota
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Researchers systematically reviewed how microplastics traverse biological barriers and deposit in human organs, documenting that ingested MPs mechanically damage the intestinal lining, shift gut microbiota toward a Firmicutes-dominant profile, and disrupt metabolite production — changes that propagate via gut-liver and gut-brain axes to contribute to metabolic, cardiovascular, neurological, and reproductive disorders, positioning microbiome modulation as a potential therapeutic strategy.
Microplastics and reproductive health: implications for human health and areas for future research
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Tiny plastic bits called microplastics have been found in human testes, semen, ovarian fluid, and placentas, and this review of existing research suggests they may harm fertility by triggering inflammation, cell damage, and hormone disruption. While scientists are still figuring out exactly how much exposure is harmful and which types of plastic pose the biggest risk, the growing evidence is a reason to pay attention to reducing everyday plastic exposure. More research is needed before we know the full picture, but this is an area worth watching closely.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.