How To Reduce Microplastics | MARINEO|O

Microplastics have been found in drinking water, food, household dust, and even in human blood, lungs and placenta. The science on exactly what they do to us is still emerging, but one thing is clear: exposure is widespread, and a lot of it is within your control.

You can't avoid microplastics entirely. But most of your daily exposure comes from a handful of predictable sources, your water, your food, your clothes and your home. Tackle those and you cut the bulk of it. Here's how, source by source.

What are microplastics, exactly?

Microplastics are plastic particles smaller than 5mm, roughly a sesame seed or smaller. Most come from larger plastics breaking down over time: bottles, packaging, synthetic clothing. Because they're tiny and don't biodegrade, they travel easily through water, soil and air, and they accumulate.

So how do we reduce microplastics?

1. Filter your drinking water

Water is one of the biggest and easiest sources to fix. Bottled water in particular can carry surprisingly high particle counts, much of it from the plastic bottle itself.

• Drink filtered tap water instead of bottled where you can. A reverse-osmosis or activated-carbon filter reduces microplastics significantly.
• Carry a stainless-steel or glass bottle rather than single-use plastic.
• Avoid leaving plastic bottles in heat (a hot car), which speeds up shedding.

2. Get plastic out of your kitchen

Heat and plastic are the worst combination. Warming food in plastic can release large amounts of particles straight into what you eat.

• Never microwave food in plastic - use glass, ceramic or metal.
• Store food in glass or stainless steel instead of plastic containers and cling wrap.
• Swap plastic chopping boards for wood or bamboo.
• Lean toward fresh over ultra-processed foods, which tend to pick up more plastic through processing and packaging.

3. Rethink your clothes and laundry

This is the one most people miss. The majority of modern clothing (polyester, nylon, acrylic, elastane) is plastic spun into thread, and every wash sheds microscopic plastic fibres into the water system. A single load can release hundreds of thousands of them.

Two things help: change how you wash, and change what you buy.

• Wash synthetic clothes less often, in cold water, on gentle cycles, and with full loads.
• Air-dry where possible, tumble-dryer heat breaks fibres down and sheds more.
• Use a microfibre-catching laundry bag or an in-machine filter.
• When buying new, choose natural fibres like wool, cotton, linen, hemp, which don't shed plastic at all.

That last point is the only permanent fix: a natural-fibre garment can't shed microplastics because there's no plastic in it. If you're looking to make the switch with your warm-weather wardrobe, we compared the options in our guide to the best plastic-free men's shorts in Australia.

4. Clean up your home's air and dust

A lot of microplastic exposure is simply breathed in. Synthetic carpets, upholstery and clothing all shed fibres that settle into household dust.

• Vacuum with a HEPA filter and dust with a damp cloth rather than dry-dusting.
• Take shoes off indoors to cut down on tracked-in particles.
• Favour natural-fibre textiles. Cotton sheets, wool rugs.
• Ventilate rooms regularly to clear airborne particles.

What about microplastics already in your body?

Researchers have found microplastics throughout the human body, and studies suggest possible links to inflammation and hormonal disruption. But the science is genuinely unsettled, scientists don't yet know what level is harmful, or how the particles move through and leave the body. The honest takeaway: there's no proven way to "detox" microplastics, so the sensible move is to reduce how many you take in rather than chase a cure.

The takeaway

You won't get your exposure to zero, and you don't need to overhaul your life to make a real difference. Focus on the big, controllable sources - filter your water, keep plastic away from heat and food, rethink synthetic clothing, and clean up household dust. Small, consistent swaps add up.

FAQs

What is the biggest source of microplastic exposure?

For most people it's a combination of drinking water (especially bottled), food and food packaging, and synthetic clothing. These are also the most controllable, which is why they're the best place to start.

Can you remove microplastics from your body?

There's currently no proven method to remove microplastics already in your body. The science is still emerging. The practical approach is to reduce ongoing exposure through your water, food, clothing and home.

Do clothes made from natural fibres shed microplastics?

No. Microplastic shedding comes from synthetic, plastic-based fabrics like polyester and nylon. Natural fibres (wool, cotton, linen and hemp) contain no plastic, so they don't shed microplastics in the wash.

Is bottled water really worse than tap?

Studies have found bottled water can contain far higher microplastic counts than tap, much of it shed from the plastic bottle. Filtered tap water in a reusable steel or glass bottle is generally a lower-plastic choice.

Sources

• UC Davis Health – Cultivating Health, Microplastics: easy ways to reduce your exposure
• Environmental Working Group (EWG) – reviews on microplastics in food and water
• International Union for Conservation of Nature (IUCN) – Primary Microplastics in the Oceans
• Peer-reviewed research on microplastics in human tissues (blood, lungs, placenta)

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