Psychology Today | 28.04.2026 22:33
You can’t see them, taste them, or feel them, but they are inside of you right now. Microplastics are pieces of plastic that are smaller than 5 millimeters—about the size of a sesame seed—and they have infiltrated virtually every system in the human body. Researchers have found them in human blood, lungs, liver, placenta, breast milk, and the brain. While much of the public discussion has focused on how they increase our risk of cancer and cardiovascular disease, research now suggests that microplastics may be affecting our mental health.