Comprehensive analysis of microbial content in whole-genome sequencing samples from The Cancer Genome Atlas project
https://www.science.org/doi/10.1126/scitranslmed.ads6335
Extensive sequencing study finds few links between cancer and microbiome
I do wonder about all the other microbiome claims, do they suffer from similar problems. No doubt, microbiome has health impacts, but the field is evolving, and at the initial enthusiastic (even hype!) stage, there is a tendency to see the new phenomenon everywhere, so some degree of overstretch can happen. Microbiome and PD, AD, CVD etc., everywhere you look. Perhaps we need a bit of a critical pullback and more examination of the evidence. YMMV.