Microplastics and Brain Health: Emerging Risks for Neurodegenerative Diseases

New research suggests that microplastics—tiny plastic particles found in food, water, and air—may negatively impact brain health and potentially contribute to conditions like Alzheimer’s Disease and Parkinson’s Disease. A systematic review highlights five key biological mechanisms through which these particles may cause harm.

Scientists found that microplastics can trigger inflammation, increase oxidative stress, disrupt the blood-brain barrier, impair mitochondrial function, and damage neurons. These combined effects may weaken brain function and accelerate neurodegenerative processes.

Research also indicates that microplastics may promote harmful protein buildup, such as beta-amyloid and tau in Alzheimer’s, and alpha-synuclein in Parkinson’s. Although most microplastics are excreted, some accumulate in organs, including the brain.

While a direct causal link is still under investigation, experts recommend reducing exposure by limiting plastic use, avoiding processed foods, and choosing natural materials to minimize potential long-term health risks.

15-03-2026