New Study Finds More Microplastics in Lungs of Cancer Patients

Scientists have discovered a new potential health concern regarding the air we breathe. A recent study presented at the European Respiratory Society (ERS) Congress in Barcelona suggests that microplastics—tiny pieces of plastic smaller than five millimeters—are frequently found inside human lungs. More importantly, researchers found these particles more often in people who have lung cancer than in those who do not.

According to MedPage Today, the study looked at 100 people who underwent a bronchoscopy, a medical procedure where a doctor uses a thin tube to look inside a patient's airways. The results showed that 66% of patients with lung cancer had microplastics in their lung samples, compared to 46% of those without the disease. Even after researchers adjusted for factors like age, sex, and smoking history, the link between the presence of these particles and lung cancer remained significant.

Ilias Dimeas, a researcher from University College Dublin and the University of Thessaly, led the study. He explained that while the findings are important, they do not yet explain the exact relationship between the plastic and the disease. "Microplastics could contribute to inflammation or other biological processes that may contribute to diseases like cancer," Dimeas said in a press release. However, he also noted that it is possible that diseased lungs simply hold onto these particles differently than healthy lungs do.

This research adds to a growing conversation about how our daily habits affect our long-term health. Previous studies have looked at how diet and lifestyle choices influence conditions like prostate cancer and Alzheimer’s disease. Now, as microplastics become common in the air, water, soil, and food, scientists are working to understand if these materials pose a direct threat to human health. These particles are already linked to other health issues, including heart disease and problems with brain function.

Despite the new findings, experts are being careful not to jump to conclusions. Ria Devereux, a researcher from the University of East London, noted that this was a small, observational study. This means it observed people as they were but did not test a specific cause-and-effect relationship. Devereux pointed out that the study cannot tell us where the plastic came from or how long it had been in the lungs. She also asked whether the medical tools used during the bronchoscopy might have accidentally introduced some of the plastic particles into the samples.

"This study is an important preliminary study, but it does not establish that microplastics are a cause or risk factor for lung cancer," Devereux stated in comments posted to the Science Media Centre website. She emphasized that future research needs to consider other factors, such as a person's job, their exposure to air pollution, and any other lung conditions they might have.

While the science is still developing, some experts suggest taking simple steps to reduce exposure to microplastics. These include avoiding the burning of plastic, not using nonstick or plastic cookware, and choosing glass containers for food and drinks instead of plastic ones. Experts also recommend removing synthetic fabrics from the home and avoiding tobacco smoke, which can further damage lung health.

As for the next steps, the research team is already conducting laboratory experiments to see exactly how these plastic particles interact with human lung cells. Understanding the types of plastics involved and their biological impact is the next major goal. For now, the medical community agrees that while the presence of microplastics in the body is a concern, more rigorous research is required to determine the true level of risk they pose to human health.