Microplastics found in human brains in high levels

New research has confirmed what many feared—plastic isn’t just in our environment, it’s in our brains. A study published in _Nature Medicine_ found nanoplastics in every human brain sample analyzed, with concentrations rising over time. Brains from dementia patients contained significantly more plastic, though researchers caution that a direct link remains unproven. The findings raise urgent questions about long-term health effects and how well the brain protects itself from microscopic pollutants. As plastic use continues to grow, so does the need for deeper investigation into its impact on human health.