Microplastics are turning up in human brains, and new research suggests their presence is increasing at an alarming rate. A study led by Dr. Andrew West, a pharmacology professor at Duke University, is exploring the potential links between environmental factors and age-related brain diseases like dementia and Alzheimer’s. While the study found higher concentrations of plastic in individuals diagnosed with dementia, researchers caution that this does not necessarily indicate a direct cause. Dr. West joined Jeff Hamlin to discuss the findings and what they could mean for public health.