>>105729017Microplastics are literal nothingburger.
The fact we find them in their pure form, is proof in itself.
Meanwhile viruses integrate into your DNA, heavy metals replace your actual bones, teeth and braincells, sharp dust particles like silica or asbestos straight up fucking asphyxiates you, and you need modern science to detect any of them in your body.
Plastic is inert, and any actual decay is so slow, that you will die before it can cause any harm.
And even then, toothbrushes make up very little in grand scheme of things, you could brush a toothbrush into fine dust until there's nothing left, and you'd ingest more plastic and heavy metals that are actually toxic for us, by eating a single medium sized fish.