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Microplastics in marine ecosystems: regional patterns, organism-level impacts and human exposure pathways
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This review of 42 studies found that tiny plastic fibers—mostly from common plastics like polyester and polyethylene—are building up in the guts and gills of marine animals, causing real harm like digestive blockages and organ damage. Since these are often the same fish and shellfish we eat, this points to a likely (though not yet fully proven) pathway for microplastics to enter our own bodies through seafood. The research also found major gaps in monitoring, especially in the Indian, Arctic, and Antarctic oceans, meaning we still don't have a full picture of how widespread this risk really is.
Microplastics contaminate coastal and oceanic environments and create ecological risk through ingestion, tissue retention and trophic transfer. This review synthesised evidence from Scopus-indexed open-access research articles published from 2020 to 2024 and complemented it with National Centers for Environmental Information records on oceanic microplastic pollution from 2017 to 2022. The search retrieved 241 records and 42 studies met the eligibility criteria after title, abstract and full-text screening. The results show a regionally uneven evidence base, with stronger research concentration in the Atlantic and Pacific oceans and weaker coverage in the Indian, Arctic and Antarctic basins. Fibres were the dominant particle form, while polyethylene, polyester and polyethylene terephthalate were the most frequent polymers. The gastrointestinal tract and gills were the principal accumulation sites, with reported effects including digestive obstruction, respiratory impairment, oxidative stress, histopathological damage and reduced nutrient absorption. The evidence indicates plausible exposure pathways for humans through seafood, although methodological heterogeneity limits comparability among regions and taxa. Standardised sampling, polymer identification and reporting protocols, together with expanded monitoring in data-poor marine regions, are required to support risk assessment, pollution control and management of food species.
More Papers Like This
Microplastics in marine ecosystems: regional patterns, organism-level impacts and human exposure pathways
AI summary Read the abstract
This review pulled together findings from 42 studies to show that tiny plastic fibers are widespread in oceans, building up in fish and shellfish gills and guts, where they cause damage like inflammation and digestive problems. Since we eat seafood, this creates a likely—but not yet fully proven—pathway for microplastics to reach our own bodies, though scientists still need more consistent testing methods and broader ocean monitoring (especially in under-studied regions like the Arctic and Antarctic) to understand the actual risk to human health.
Tiny Particles, Big Problems: The Threat of Microplastics to Marine Life and Human Health
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This review summarizes the widespread presence of microplastics across marine ecosystems, noting their accumulation in fish tissues including digestive tracts and gills. Sources range from synthetic textiles and packaging to personal care products, and advanced detection methods have now confirmed microplastics in human tissues as well. The paper underscores the need for comprehensive strategies to reduce microplastic pollution for the protection of both marine life and human health.
Microplastics in the aquatic environment and aquatic biological resources
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Tiny plastic bits called microplastics are showing up throughout our oceans, and this review pulls together existing research showing they're building up in fish and other sea life. Since we eat seafood, these plastics can move up the food chain and into our bodies, raising concerns about long-term health effects that scientists are still working to understand. The researchers stress that we need more studies and stronger action to cut plastic pollution before it causes bigger problems for both marine life and the people who depend on seafood for food.
Impact of microplastics on marine ecosystems: An analysis of their ecological effects
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This review of 31 studies found that microplastics are harming marine life, from tiny zooplankton to fish, seabirds, and turtles, causing cell damage, inflammation, and disrupted digestion, with these toxins building up as they move up the food chain. Since humans eat seafood from these same waters, this bioaccumulation is a red flag for what may end up on our plates, underscoring why researchers are calling for urgent action to reduce plastic pollution in oceans.
Microplastics in Marine Ecosystems: A Serious Health Concern
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This review paper pulls together existing research showing that tiny plastic bits from ocean pollution—called microplastics—are turning up in seawater, marine life, and the seafood we eat. Because these particles can carry toxic chemicals and may build up in our bodies over time, scientists are increasingly concerned about what this means for long-term human health, even though more research is still needed to fully understand the risks.
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