Microplastics have been under the microscope lately, especially considering it’s estimated that people consume between 39,000 and 52,000 microplastic particles yearly. That number goes up to 74,000 to 121,000 particles when you include those we breathe in. Microplastics have become such a part of our lives that a new study found a plastic spoon’s worth of tiny plastic shards in human brain tissue. That sounds bad, but exactly how bad is it?
To dig deeper, we spoke with a family physician about what counts as a “safe” level of microplastics, which foods they hide in and how to limit your exposure.
How many microplastics are too many?
“There is no officially established ‘safe’ or ‘unsafe’ level of microplastic intake. It makes sense to want your exposure to be as low as possible,” Dr. Joseph Mercola, a board-certified family medicine osteopathic physician, said in an email.
Microplastics can enter our food due to contamination where the food was grown, raised or processed. Mercola explained that using plastic mulch and plastic seed coatings in agriculture, and irrigation with contaminated water, are among the various ways microplastics can end up in food. Plastic packaging, utensils and containers are additional sources.
According to the US Food and Drug Administration, current evidence doesn’t suggest that the levels of microplastics in food are a risk to us. However, you still might want to minimize how much microplastics you passively consume. These are the most common foods that contain microplastics, and the measures you can adopt to reduce your plastic intake.
Top 10 foods in your diet that contain microplastics
Seafood
One of the most significant ways plastic particles end up in our food is through single-use plastics that break down and find their way into waterways and soil. When they reach the oceans, they end up in our seafood.
“Microplastics are then taken up by plankton and mistaken for food by fish and selfish,” Mercola said. “The tiny particles accumulate in the flesh … then end up on our plates.”
A recent study published by Portland State University discovered a variety of microplastics in 180 out of 182 tested seafood samples. Microfibers are the most common type of microplastic present, but this isn’t the only type that ends up in our oceans.
