Whether it’s from the deepest oceans to the tallest mountains, or from the air and soil to the food chain, microplastic debris is already present almost everywhere on the Earth. Now, more studies have proved that micro plastics have “invaded” human blood.
Micro plastics were found in human blood for the first time!
Usually, plastic debris less than 5mm in diameter are referred to ”micro plastics”, and its very small volume makes it difficult for us to notice its existence.
Recently, a study published in the journal international environment shows that scientists have detected micro plastic pollution in human blood for the first time. Previous studies have found microplastics in the intestines, placenta of unborn infants and feces of adults and infants, but microplastics have never been found in blood samples.
The study examined blood samples from 22 anonymous healthy volunteers and found that 77% of the samples contained microplastics with an average concentration of 1.6 micrograms per milliliter.
Five kinds of plastics were tested: polymethylmethacrylate (PMMA), polypropylene (PP), polystyrene (PS), polyethylene (PE) and polyethylene terephthalate (PET).
PMMA, also known as acrylic or plexiglass, is mostly used for the appearance of electronic equipment and lighting equipment.
PP is widely used in takeout boxes, fresh-keeping boxes and some milk bottles.
PS is widely used in disposable food packaging materials.
PE is often used for packaging films and plastic bags, such as fresh-keeping bags and fresh-keeping films.
PET is usually used for the appearance of mineral water bottles, beverage bottles and various household appliances.
The results showed that about half of the blood samples showed traces of PET plastic, more than one-third of the blood samples contained PS and about one-quarter of the blood samples contained PE.
What is even more astonishing is that researchers found up to three different types of micro plastics in a blood sample.
The plastic particle concentrations of 22 blood samples were divided by polymer type
How does micro plastics enter the blood?
Research shows that these micro plastics may enter the human body through air, water or food, or through specific toothpaste, lipstick and tattoo ink. Theoretically, plastic particles may be transported through the bloodstream to various organs throughout the body.
The researchers said there may be other types of microplastics in the blood, but they did not detect particles larger than the diameter of the sampling needle in this study.
Although the impact of micro plastics on human health is unclear, researchers are worried that micro plastics will cause damage to human cells. Previously, air pollution particles have been shown to enter the human body and cause millions of premature deaths every year.
Where is the way out for plastic pollution?
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Post time: May-20-2022