I'll challenge that, to me this is a no-brainer with mountains of evidence. You can look at research about using antibiotics or fecal-matter transplants and ou

I'll challenge that, to me this is a no-brainer with mountains of evidence. You can look at research about using antibiotics or fecal-matter transplants and outcomes on both physiological and psychological health. Too many to list for antibiotics and host health: https://scholar.google.com/scholar?hl=en&as_sdt=0%2C10&q=antibiotics+mental+illness+gut+bacteria&oq=antibiotics+mental https://scholar.google.com/scholar?hl=en&as_sdt=0%2C10&q=ant... Here's one about treating metabolic syndrome with fecal-matter transplants to cause a shift in host microbiome https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045147/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5045147/ "The human gut microbiome is recognized as an independent environmental modulator of host metabolic health and disease. Research in animal models has demonstrated that the gut microbiome has the functional capacity to induce or relieve metabolic syndrome."