AFAIK, still no conclusive studies that show microplastics having an overly adverse affect on the human body

The problem is that we’ll never know because there’s no control group. Everybody has them, even fetuses still in the womb. You would have to build bunkers with perfect air filtering, and then go through, like, four generations of humans to breed microplastics-free specimen, which you could then use a the control group for the rest… Only them never leaving the bunker would already invalidate the tests… So, yeah…