Scientists are expressing increasing concern about the impact of microplastics on human health. Microplastics, tiny fragments of plastic found in the environment, can be ingested, inhaled, or absorbed, posing potential risks to the human body. These concerns were highlighted decades ago, but recent investigations have revealed that chemical companies have been aware of the risks for a long time.
Historical Evidence of Microplastic Risks
In 1974, a significant meeting took place at a hotel in New York City, where a German gastroenterologist named Gerhard Volkheimer presented research that ingested particles like microplastics could permeate the body and deposit in vital organs. Volkheimer’s study revealed how particles such as PVC could travel beyond the gut and affect organs like the brain and liver. This finding sparked discussions among scientists within the industry.
Companies in the chemical industry were concerned about the implications of these findings on the plastic packaging industry. Internal records reveal that these companies had been aware of the potential dangers associated with microplastics for decades.
The Scientific Meeting of 1974
A critical meeting organized by Irving Selikoff gathered toxicologists, labor representatives, and industry executives. The focus was on toxicological investigations concerning vinyl chloride and PVC. Volkheimer’s presentation was a part of this pivotal event, bringing attention to the potential health risks posed by microplastics.
Volkheimer demonstrated that microparticles could cross the intestinal lining and enter the bloodstream, impacting various body organs. He showed evidence of PVC particles infiltrating the blood and cerebrospinal fluid of animals.
Ongoing Industry Concerns
Following the presentation, some companies wrote internal memos acknowledging the risk of microplastics depositing in human tissues. Despite this, there was little public acknowledgment or regulatory action for many years.
The Chlorine Institute and other industry bodies commissioned reports that referenced Volkheimer’s findings. These documents acknowledged the potential for microplastics to be absorbed by the body and raise concerns about long-term effects.
The Current Understanding
Recent studies have found microplastics in the human body, including in blood, breast milk, and lung tissue. These findings have reignited concerns about the health impacts of microplastics. Researchers note that microplastics have been associated with health issues such as inflammation and cancer.
Government and industry are now more actively investigating these risks. The chemical industry, through organizations like the American Chemistry Council, emphasizes that further research is necessary to assess the health impact of these particles.
Conclusion
Research into the impact of microplastics continues to gain momentum, as scientists uncover more evidence of their presence in human tissues. While there is no consensus yet on the exact health risks, the presence of microplastics in the environment and our bodies demands closer scientific scrutiny to develop informed strategies for public health and safety.
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