When you’re cooking, storing food, or even brewing your morning coffee or tea, you might unknowingly be introducing microplastics into your meals. These minuscule plastic bits are not just finding their way into our food; they’re also appearing in our bodies, showing up in places like the brain, blood, liver, and placenta.
A significant contributor to microplastics entering our diets is the contamination of soil, water, and air. However, it’s important to note that kitchen practices can also be a factor. Simple habits, like chopping veggies on a plastic cutting board or reheating food in plastic containers, can raise your risk of exposure.
Currently, more research is essential to understand how microplastics and nanoplastics might impact human health. Some preliminary findings suggest potential consequences could be concerning. For example, one study indicates that microplastics in arteries might be linked to an increased risk of stroke and heart disease.
If you’re worried about microplastic exposure—and how your kitchen habits may contribute—there’s some positive news. You can often make straightforward, plastic-free alternatives.
Here are six ways microplastics could be entering your food and drink due to your kitchen practices, along with suggestions for alternatives.
1. Plastic Cutting Boards
Many opt for plastic cutting boards because they’re nonporous and easy to clean. However, this may not be the wisest choice. Cutting food on plastic boards can result in microplastics ending up in your meals. Research indicates that stronger cutting can release even more microplastics.
“Plastic cutting boards are among the highest sources of exposure and one of the simplest changes you can make,” says a microplastics expert. In fact, a study found that individuals might consume up to 50 grams of microplastics annually from these boards; for some perspective, that’s roughly the weight of a credit card.
What can you use instead?
Consider switching to a wood or bamboo cutting board.
2. Heating Food In Plastic Storage Containers
If you frequently reheat meals in plastic containers, you might want to rethink that approach. When heated, microplastics can leach into food. Even containers branded as “microwave safe” aren’t all reliable since many take-out and single-use containers shouldn’t be microwaved.
“A study revealed that a plastic container could release over 10 million microplastics when heated with just water,” explains a researcher at the University of Rhode Island.
Even the practice of heating frozen vegetables in plastic packaging raises eyebrows. While some packages are marked as microwave-safe, the lack of extensive research means many experts recommend avoiding this practice altogether.
What can you use instead?
Swap to oven or microwave-safe glass containers, which won’t leach microplastics. And, instead of heating plastic-wrapped veggies directly, transfer them to a glass container or a pan on the stove.
3. Using Disposable Plastic Storage Bags
If you regularly use plastic storage bags for snacks and leftovers, it might be time to consider alternatives. “These plastics are soft and can easily shed plastic flakes, posing a health risk,” cautions a food scientist. A 2020 study even found that opening plastic packaging could generate microplastics.
What can you use instead?
Opt for reusable silicone bags or containers made from stainless steel or glass, or consider beeswax wraps.
4. Using Plastic Wrap Against Hot Food
Plastic wrap can transfer plastic particles into food, especially if it’s in direct contact with hot items. As hot food releases moisture and heat, there’s a risk of the wrap melting onto the food, which could be hazardous.
What can you use instead?
Cover food loosely with aluminum foil (just don’t microwave it) or use reusable silicone stretch wraps or glass containers with lids.
5. Cooking With Plastic Utensils
If you’re using plastic utensils for cooking, you might want to reconsider. Studies show that these utensils can release significant amounts of microplastic particles, particularly when heated.
What can you use instead?
Switch to utensils made of wood or metal, depending on the type of cookware you’re using.
6. Using Plastic Tea Bags
Many tea bags are made from a type of plastic known as polypropylene. Brewing these in hot water can cause the bags to break down, releasing microplastics. Some researchers have found that plastic tea bags can release millions of these particles.
“These particles can enter the bloodstream and potentially even cross the blood-brain barrier,” notes a microplastics expert.
What can you use instead?
The safest choice is brewing loose leaf tea using a glass or metal infuser. If you prefer tea bags, try those labeled as plastic-free or made from natural materials like cotton or paper. However, be aware that even paper tea bags can sometimes contain plastic components.
