You probably didn’t plan on eating plastic today, but chances are, a few tiny fragments still made it onto your plate. Not from packaging you can see, but from things far smaller and hard to detect – microplastics. They’re in our water, food and sometimes the kitchen tools we use to prepare it. So, how do you avoid microplastics, or will they always remain an ‘unlucky’ part of the human diet?
That might sound dramatic, but it’s more common than we realise. While microplastics are a food issue that can’t be solved overnight, there are ways to lower your exposure without throwing out everything in your kitchen.
Microplastics lurk on chopping boards, inside kettles and sometimes in our fruit bowls.
What are microplastics?
Microplastics are exactly what they sound like – tiny plastic particles smaller than 5 millimetres. Most begin as larger bits of plastic – think reusable containers, packaging and household goods like blenders and nonstick pans that slowly break down over time. Others, like microbeads (once used in facial exfoliants and toothpaste), are specifically manufactured to be small.
Plastic doesn’t biodegrade, it simply splinters and spreads. Once it’s in our soil, water and air, it’s hard to keep out of the food system. Plants absorb microplastics through water and soil. Animals ingest them through contaminated feed or water sources. Even our kitchen habits – what we cook with, how we store food and the dust in the air – can introduce more. Microplastics aren’t just in food and water systems – they lurk on chopping boards, inside kettles and sometimes in our fruit bowls.
How does it get into our food?
‘Reusable’ containers, scratched Teflon pans, plastic chopping boards and utensils can all shed microplastics, especially when exposed to heat or friction. That leftover curry you stored in a plastic tub and reheated? It’s seasoned with more than just spices; it likely contains microplastics.
Even household dust plays a part. Tiny fibres from synthetic clothing and plastic-based furnishings drift through the air, settle on counters and make their way into our meals. It’s not one single source that contributes – the little things add up.
The plastics themselves aren’t the only issue. Microplastics can carry chemical additives like phthalates and BPA (Bisphenol A) – compounds linked to hormone disruption and other long-term health effects. Contamination also comes from polluted irrigation water, plastic-based fertilisers or food processing. But a surprising amount comes from what we do at home.
Microplastics can carry chemical additives like phthalates and BPA – compounds linked to hormone disruption.
Studies suggest that “humans constantly inhale and ingest microplastics; however, whether these contaminants pose a substantial risk to human health is far from understood.” We’re still learning about the full impact, but experts agree – reducing exposure, especially through food, is essential.
How to avoid microplastics in the kitchen
You don’t need to throw out everything with a plastic lid. It’s about making smarter choices that lessen exposure without overcomplicating your routine. Here are some simple ways you can avoid microplastics in your food and water at home.
Don’t microwave plastic containers. Heat can cause it to break down, releasing microplastics and potentially harmful chemicals into your food. Even ‘microwave-safe’ plastics may degrade over time, especially with acidic foods or repeated use. This breakdown not only releases microplastic particles but may also leach additives like BPA or phthalates, which are linked to hormone disruption.
Swap plastic for lidded glass or ceramic containers. This is especially useful if you are too lazy to transfer your food from plastic containers to ceramic bowls when reheating leftovers in the microwave. Instead, choose glass containers, ceramic dishes or stainless steel tins for storing and reheating food. They are also nifty and convenient when entertaining.
Throw away scratched non-stick pans. Synthetic nonstick Teflon pans are safe to use when maintained properly. But when scratched, the non-stick coating flakes off and ends up in your food. Many non-stick pans are made from aluminium; if the coating wears away, you’re cooking directly on exposed aluminium, which may leach into food, especially when cooking acidic foods.
Upgrade your cooking tools. Wooden, bamboo or stainless steel utensils are durable and less likely to shed plastic particles into your food than plastic spatulas that disintegrate when heat is applied. To avoid scratching your nonstick pan, use BPA-free, heat-resistant, food-grade silicone spatulas. For stainless steel pots or cast iron pans, use wooden spoons.
Replace plastic chopping boards with wooden ones. Over time, plastic particles from the cutting board disperse into food as it wears down and becomes frayed, making wooden cutting boards safer for long-term use.
Filter your water. Many municipal water sources contain trace microplastics. A certified water filter can help reduce what ends up in your cooking and drinking water.
Rethink your kettle. Plastic kettles and coffee machines can release microplastics, particularly under high heat. Consider switching to stainless steel or glass appliances. Also, make sure your water bottles and coffee mugs are BPA-free and heat-resistant.
Avoid unnecessary packaging. If you can avoid buying prepackaged produce, buy loose fruit and vegetables where possible and choose whole foods over ultra-processed options. The more steps and packaging involved, the greater the exposure to plastics.
Cook with care
Plastic is almost impossible to avoid. But when it comes to what we eat, small changes matter.
Choosing better tools if you can afford to, reducing single-use plastic pollution and being aware of how heat works in the kitchen all help cut down the amount of plastic that unknowingly slips into our meals. Don’t panic – just cook with more awareness to make your kitchen and food more microplastic-proof.
