https://archive.is/5FF6L
"Dr Fazel Monikh, of the University of Padua, Italy, another signatory, who has spent a decade working on the detection of nanomaterials in biological samples, says he has never come across the kinds of microplastics reported in recent studies. "When particulate materials enter a living organism, including the human body, they undergo biotransformation," he tells The Telegraph.
"Even if one were to assume the highly unlikely scenario in which an intact particle reaches a protected compartment, such as the brain, and is then successfully detected, it would not retain the appearance shown in most of the reported data.
"For these reasons, most of the presented results and their interpretation are not scientifically convincing to me, nor to my colleagues who are experts in this field."