A study on rats suggests that exposure to microplastics may impair the blood–brain barrier, induce oxidative stress in the brain, and damage neurons. The microplastic exposure involved oral administration of low-density polyethylene (LDPE) suspended in water for 3 and 6 weeks. The research was published in Molecular Neurobiology. … Study author Ghasem Forutan and his colleagues note that freshwater contamination is a major route by which microplastics can enter the human body. 

Other microplastics news:

• Los Angeles Times: Opinion: Microplastics are just one way the world is trying to kill you