Recent research reveals that unwrapping food from plastic packaging can contaminate it with tiny plastic particles called micro- and nanoplastics. This contamination happens when you handle deli meats, tea bags, or even milk cartons. Even glass bottles with plastic tops can shed these particles every time you open them.
Lisa Zimmermann, who led the study published in the journal NPJ Science of Food, emphasizes that the simple act of opening these containers leads to an increase in microplastic contamination. Each time you twist off a bottle cap, more particles can enter your drink. Zimmermann works with the Food Packaging Forum in Zurich, a group focused on the safety of food contact materials.
The study highlights that microplastics have been found in various foods and drinks, including beer, canned fish, and even mineral water. This is the first solid evidence showing how regular use of plastic-wrapped foods can lead to contamination.
A related investigation indicated that over 3,600 different chemicals can leach into food products during processing and packaging, with some linked to health issues like cancer and endocrine disruption. David Andrews, an expert with the Environmental Working Group, notes that understanding the health effects of microplastics in our food isn’t very clear yet, but he warns that food packaging could significantly contribute to our exposure. “This study should raise alarm bells,” he said.
Microplastics are tiny pieces of plastic—some as small as 1/25,000th of an inch. They can enter our bodies through food, traveling from our digestive tracts into our bloodstream. Recent studies have even found these particles in human tissues, including brain and testicular tissue.
Research indicates that ultraprocessed foods tend to have higher levels of microplastics. This increase is likely due to the many steps involved in manufacturing these items, which raises the chances of them coming into contact with plastic processing equipment. A study found that washing melamine dishes repeatedly also led to increased microplastic shedding. After washing a melamine bowl 100 times, researchers noted a rise in microplastic release.
To limit exposure to plastics, consider using glass or stainless steel containers instead of plastic. Avoid microwaving food in plastic and check for recycling codes to steer clear of harmful plastics, particularly those marked with a recycling code of 3. As neat as personal changes can be, experts emphasize the need for collective action to tackle plastic pollution. A key opportunity arises with the upcoming Global Plastics Treaty, where countries will discuss binding agreements to reduce plastic waste.