My daughter is a professor in environmental toxicology and sent me this article today. She got it from the US Ecotoxicology society (SETAC)—they send out a weekly briefing.
Basically it is saying we haven’t yet confirmed that microplastic and microfiber particles are directly causing human health problems, but there are multiple ways that they could be.
“Depending on the recipe, you can have some chemicals in plastic that are toxic, and in fact a lot of ‘substances of very high concern (SVHCs)’ are associated with plastic products.” She’s also concerned by what is known as particle toxicity. “If tiny particles, including plastics, make their way to a tissue in your body, they can cause what’s called oxidative stress, which can lead to chronic inflammation.” That, in turn, is now understood to play a major role in the onset of a number of chronic diseases, Leslie explains. toxins in the environment can become attached to them." There are studies that indicate inflammatory diseases are on the rise.
The second link is how much of the world’s tap water supply is contaminated by microplastic fibers. 94% of the US samples were contaminated. "There’s one confirmed source of plastic fiber pollution - and you’re probably wearing it. Synthetic garments emit up to 700,000 fibers per washload, researchers found. Much of that evades treatment and is discharged into public waterways. Mason said fibers in treated wastewater are probably later collected and piped into homes in other communities. “We’re all downstream from someone.”