Welcome to the 18th episode of The Brain Podcast - the official podcast of the journals Brain and Brain Communications.  This episode features a discussion with first author author Dr Stefanie Grabrucker of the Brain article entitled: Microbiota from Alzheimer’s patients induce deficits in cognition and hippocampal neurogenesis How does lifestyle and the environment affect cognition in Alzheimer's disease via the gut and what can we do about it? Listen for this and more in this exciting episode. Check out the full article on the Brain website: https://doi.org/10.1093/brain/awad303 This episode was co-hosted by Chaitra Sathyaprakash and Adam Handel,  edited and produced by Chaitra and Xin You Tai, co-produced by Antonia Johnston, original music by Ammar Al-Chalabi.