Breast implants, baby toys, paint: The surprising everyday sources of microplastics
The report also found that some climate technology could actually make microplastic exposure worse.
Microplastics can enter our bodies from a variety of shocking everyday sources, a new report has revealed.
Dr Heather Leslie, the pioneering scientist who first found microplastics in the human bloodstream, describes it as a "microplastic storm" driven by poorly understood exposure pathways.
Hospital equipment for premature babies, children’s toys and paint all pose potential risks, the study found.
Breast implants to baby feeding tubes: Microplastics in hospitals
Exploring Everyday Microplastic Exposures, funded by Plastic Soup Foundation and The Flotilla Foundation and authored by Leslie, highlights the vast scale of microplastic exposure in daily life.
These particles endanger human health by accumulating in organs and increasing the risk of inflammation, cellular damage, cancer and cardiovascular issues.
Drawing on over 350 peer-reviewed studies, the report maps microplastic release across five categories of everyday life: outdoor sources, indoor environments, children’s products, healthcare and personal care, and food and drink.
In hospitals, the research found that plastic particles can be introduced into the body via devices and treatments, with microplastic fallout in operating rooms recorded at up to 9,258 particles per square metre during a single shift.
Cardiac catheters, silicone breast implants, orthopaedic implants or intravenous fluid are all cited as sources with the potential of inadvertently dosing patients with microplastics.
Startlingly, premature babies fed intravenously in neonatal units are estimated to receive up to 115 microplastic particles over a 72-hour feeding period from the infusion circuits alone.
Children’s toys and paint: Microplastics at home
Children's products are also of significant concern, as building bricks, baby play mats and other products for children can release PET, polypropylene, polyethene and PVC into a child’s living environment.
As children naturally ingest more settled dust during play and breathe in more air per kilogram bodyweight, their exposure is proportionally higher than that of adults.
Baby formula intake also exposes babies to microplastics at levels from <1 to 17 microplastics per gram through packaging.
Another unexpected indoor exposure is via paint. Plastic is the main component of many paint products. As such, paint emits microplastics when it wears down or when old layers are scraped off.
A single coat applied across 100 square metres is estimated to contain between 17 and 68 quadrillion polymeric particles.
Climate technology could worsen microplastic exposure
Among the report's most striking findings is evidence that emerging climate interventions could make microplastic exposure significantly worse.
For example, stratospheric aerosol injection - a form of solar geoengineering being advanced by countries including the United Kingdom and the United States - involves dispersing vast quantities of particles high into the atmosphere.
Multiple patents already exist describing the release of particles, including micro-sized polymeric particles at altitudes of up to 20 km in the atmosphere, creating a potentially ‘tera scale’ source of intentionally added airborne microplastics and fallout
The research identifies that rainfall already contains microplastics with wear and tear from car tyres, synthetic textiles and clothing.
Plastic needs to stop being the ‘answer to every design question’
The report aims to empower people to reduce their own exposure through individual and collective action.
"Exposure is happening all the time, not only from products we recognise, but from systems and processes that most people would never consider,” says Leslie.
“This is not just about waste or environmental pollution, it is about the materials that manufacturers have built into our world, and the particles they continuously release into the spaces we live in.”
The report calls on policymakers to adopt a precautionary principle, accelerating health impact research and prioritising mitigation over 'paralysis by analysis.'
“When plastic stops being the answer to almost every design question - from teabags to towels to toys and beyond - humanity can end up successfully abating the microplastic storm," Leslie adds.
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