If it was like dust or sand it would be 1000x mass and size but 0 issue. Small size is the problem here. Micro means it crosses directly into tissue and nano

If it was like dust or sand it would be 1000x mass and size but 0 issue. Small size is the problem here. Micro means it crosses directly into tissue and nano means it gets into individual cells and screws up their business. Want to put a number on how much plastic are you OK to accumulate in your lungs/testes/placenta/blood/breast milk/brain?