Your food is full of microplastics—and now we know why

A recent study has shed light on how daily interactions with plastic objects can lead to the ingestion of tiny plastic particles, which can harm the human body. Researchers have long focused on the environmental impact of microplastics, but are now sounding the alarm about their effects on human health. The study, published in NPJ Science of Food, analyzed data from 100 previous papers on microplastics, nanoplastics, and plastic particles. It found that food contact articles, such as water bottles and food packaging, are a significant source of microplastics in foodstuffs. The study revealed that microplastic shedding increases with repeated uses, such as screwing a reusable water bottle lid on and off or washing a melamine dish. The authors stressed the need for further research into how repeated interactions, heating, and washing affect microplastic shedding. The study also highlighted the lack of research on certain types of plastics and food contact articles. Microplastics have been linked to various health problems, including reproductive, digestive, and respiratory issues, and potentially even colon and lung cancer. Another recent study found that the adult brain can contain a significant amount of microplastics and nanoplastics, emphasizing the need for further research into how plastic particles enter the human body and their effects once they are inside.