The new study estimated that the average adult eats 2,000 microplastics per year. Heck, I probably eat more non-micro plastic (by mass) by accident in a year.
Particle scale almost certainly matters. Asbestos is, as I understand it, not particularly notable except for the size of the particles it tends to release into the air. Particles of sufficiently small size can be biologically active when the bulk material wouldn't be.
True, but is there anything known about this? The part of the thread (currently above this one) where people sum up the risks of plastics doesn't show anything that I'd say increases with lower particle size.
