The first two articles established that plastic is everywhere, including inside you. The question that matters is whether that does any harm. The particles themselves are one concern. The chemicals added to plastic to make it soft, hard, coloured or fire-resistant are another, because they are not locked in and they leach out.
Coming soon.
Plastic harms wildlife by being eaten and by entangling. In people the evidence is still being gathered, but the particles have been found in blood, lungs and organs, and the additives that come with them are known to interfere with hormones. You cannot avoid plastic, but knowing where it comes from and how it gets in is the first step to taking in less of it.
Ocean pollution, plastic litter - deposit