In this 2nd episode on cancer and the gut microbiome , our Microbiome Medics duo continue their exploration of the impact of the gut microbiome on all aspects of cancer biology focusing on responses to cancer therapies and the potential effects of medications such as antibiotics and proton pump inhibitors on the resident microbes. Dr Sheena discusses practical advice to improve gut health that she discusses with her NHS patients diagnosed with cancer and Dr Shiv introduces a few new concepts including the Oestrobolome and its importance to breast cancer and discusses a paper describing microbiomes within several different types of human cancers which may help further understanding of the impact of microorganisms on the hallmarks of cancer. Co-hosts: Dr Siobhan McCormack MBChB MRCGP Dip BSLM Dr Sheena Fraser MBChB MRCGP Dip BSLM This podcast is brought to you in collaboration with the British Society of Lifestyle Medicine, The UK's fastest growing medical speciality. Our only declaration of interest is that we have co-created "the gut microbiome for clinicians", an online course for busy health professionals with over 30 hours of learning available on BSLM.org.uk.