Rising Microplastic Levels Detected in Human Organs

Microplastics, particularly polyethylene, are increasingly found in human organs such as the brain, liver, and kidneys. Research indicates a significant rise in concentration between 2016 and 2024, with a pronounced accumulation in individuals with dementia.

Studies have identified a continuous increase since 1997, especially in the brain, where microplastic levels are up to 30 times higher than in other organs. Advanced microscopy techniques have unveiled previously overlooked particles smaller than 5 micrometers.

Regional differences in plastic concentrations were observed in the United States, notably between New Mexico and the East Coast. While studies in mice suggest potential health impacts, including blood vessel blockages in the brain, further research is essential to understand the implications for humans.

Despite detecting microplastics in various tissues, a direct cause-and-effect relationship with health issues remains unproven. The persistence of plastic particles in human tissues highlights the need for more comprehensive studies to uncover long-term health effects and guide future preventive measures.