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Micro- and Nanoplastics: Pathways of Food Contamination and Human Exposure Along the Farm-to-Table Chain
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Tiny plastic particles (called micro- and nanoplastics) can sneak into our food at almost every step, from soil and water on farms, to factory processing, to our own kitchens, and this review pulls together existing research to map out that entire journey for the first time. While scientists have already found these particles in food and even in human blood and organs, this paper points out that we still don't fully understand how they build up along the way, which matters because closing those gaps could help researchers figure out how to reduce our exposure and protect long-term health.
Micro and nanoplastics (MNPs), defined as particles under 5 mm down to the submicron scale (<1 µm or 1–1000 nm), have shifted from an environmental concern into a general potential contaminant of our global food supply. As plastic production escalates, the fragmentation process disperses particles across soils, water bodies and the atmosphere, resulting in their reported detection in a variety of food products and, in some studies, in human biological matrices including the bloodstream to major organs. However, confirming their presence is not equivalent to tracing their journey. Current scientific understanding of how these contaminants migrate remains uncertain, since most studies focus on isolated sources rather than the interconnected stages of production and exposure. To address this, we propose the Farm-to-Table Microplastic Exposure Cascade (FT-MPEC), an integrated concept designed to describe the potential progressive accumulation of MNPs across the food continuum. This review synthesizes the trajectory of particles from primary production into the food chain, evaluating potential transfer pathways during post-harvest handling, industrial processing and domestic preparation. By mapping these routes, we identify critical knowledge gaps and research priorities necessary to improve future monitoring, exposure assessment and mitigation strategies for public health.
More Papers Like This
The hidden impacts of micro/nanoplastics on soil, crop and human health
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This review examines the chain of impacts from micro- and nanoplastics in soil through crop uptake to potential human health effects. Researchers found that these tiny particles can stick to plant roots, enter crop tissues, and carry toxic chemicals along with them. The study highlights that this soil-to-plate pathway is still poorly understood and calls for more research into how agricultural microplastic contamination may affect the food we eat.
Pathways of micro- and nanoplastics transfer from plants to animals in the food chain
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This review pulls together what scientists currently know about tiny plastic particles moving from soil into plants, and potentially up the food chain to animals and humans. While plants can absorb these particles through their roots, researchers still aren't sure how much actually ends up on our plates or what it means for our health, more real-world studies are needed.
Plastics and microplastics in our food: how, how many and why
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This review examines how plastics and microplastics enter the food supply, covering sources of contamination, the scale of dietary exposure, degradation products, and analytical capabilities for measuring food contamination. Researchers synthesize evidence on microplastic occurrence across diverse food categories and assess gaps in understanding long-term health risks. The paper provides a broad overview of food safety concerns associated with plastic contamination.
Microplastics in Foods: An Emerging Food Safety Challenge
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Tiny plastic particles called microplastics are showing up in many of the foods we eat every day, and scientists are just starting to understand what this means for our health. This review pulls together existing research on how these particles get into food and what risks they might pose, though much is still unknown about long-term effects on the body. It's a reminder that microplastic contamination is an emerging food safety issue worth watching, even as researchers work to figure out exactly how worried we should be.
Microplastics in Food Chain - The Invisible Threat
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Tiny plastic bits from broken-down trash are ending up in our water, soil, and food, meaning they're likely making their way into your body too. This review pulls together what scientists currently know about how microplastics travel through the food chain and what they might do to our health, but it also points out that there's still a lot we don't fully understand yet. The takeaway: while researchers sort out the risks, it's worth paying attention to ways you can cut down on plastic use in your daily life.
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.