A recent study published in Nature Medicine has found microplastics and nanoplastics (MNP) in human brains, with astonishing increases over time. The researchers analyzed 91 brain samples collected from people who died between 1997 and 2024, revealing substantial rises in MNP concentrations.
The median concentration of MNPs increased by about 50% from 2016 to 2024, with levels reaching 10 times higher in brain tissue than in liver and kidney tissue. The study’s findings raise concerns about the impact of microplastics on human health.
Researchers used various methods to measure MNP levels, including analyzing blood vessel plaques and brain samples. They found that people with more MNPs were at a higher risk of heart attacks, strokes, and death. However, the study’s results also highlight the need for further research into the effects of microplastics on human health.
Experts say that microplastics are ubiquitous in the environment, contaminating food, water, air, and even human tissue. The study’s findings have sparked questions about how MNPs enter the brain, whether they can be removed, and what their potential health implications might be.
While the sample sizes were relatively small and the study has its limitations, researchers emphasize that it is essential to address this issue promptly. “People are wondering if microplastics are the next asbestos or lead,” says one expert. As the scientific community continues to investigate the effects of microplastics on human health, it is crucial to take a proactive approach to mitigate potential risks and ensure public safety.
Source: https://www.sciencenews.org/article/plastic-human-brains-microplastics