The anthropometric, physiological and biochemical data for this study are available at the University of Bath Research Data Archive: https://doi.org/10.15125/BATH-01463.
Shotgun metagenomics data for this study are available at the European Nucleotide Archive https://www.ebi.ac.uk/ena/browser/ (data accession ID: PRJEB836868).
For the purpose of Open Access, the author has applied a Creative Commons Attribution (CC BY) licence to any Author Accepted Manuscript version arising.