The questions raised are mainly about the measurement of quantities of micro- or nanoplastic in the human body. In particular, one method, pyrolysis-gas chromatography-mass spectrometry, may have either been used or interpreted incorrectly. There is still robust evidence via other methods – such as electron microscopy and Fourier transform infrared spectroscopy – that these small-scale plastics are in our organs. What is in doubt now is how much.