Microplastics linked to oxidative stress and organ infiltration

New research and internal industry documents have shed light on the biological mechanisms and historical awareness regarding microplastic harm. A study published in Nature by chemists from Columbia University and the University of California, Berkeley, suggests that microplastics become harmful due to their increased surface area as they fragment. This surface-to-volume ratio allows them to interact with water to create reactive oxygen species (ROS). These free radicals can cause oxidative stress, which is linked to cancer, cardiovascular disease, and genetic mutations.

Simultaneously, internal chemical company documents dating back to at least 1974 indicate that industry scientists were aware of the potential for plastic particles to migrate beyond the gut. Research presented decades ago showed that ingested particles, such as PVC, could penetrate the intestinal lining and travel through the blood and lymph to vital organs like the brain and liver. Experts note that this process likely applies to common plastics like polyethylene, polypropylene, and PET, which are frequently found in human bodies and linked to inflammation and disease.