Andrew Huberman· PhD
there was an analysis of the number of microplastic and nanoplastic particles in bottled water and it was estimated that there were about 30,000 of these particles per liter of water okay and those data stood for quite a long time then Imaging techniques for measuring the number of these different particles in particular the really small Nano particles the ones that are less than one micron in diameter the Imaging tools for those improved okay and I'll explain a little bit about that in a moment and there was a paper published in the proceedings of the National Academy of Sciences in 2024 that showed that the amount of nanoplastic in particular but microplastic and nanoplastics that are present in bottled water was actually vastly underestimated in that previous study rather than 30,000 particles per liter the reanalysis with better methods showed that it was anywhere from 110 all the way up to 400,000 particles per liter and the average was 240,000 particles per liter