Several studies have indicated that gut dysbiosis, which is defined as alterations in the gut microbiome, contributes to neurodegeneration and Alzheimer's disease (AD) pathogenesis. These studies have shown the existence of a complex bi-directional relationship between AD and the gut microbiome, which also underscores the possibility of developing preventive strategies against disease manifestation by altering the gut microbiome.
Tarawneh, R., & Penhos, E. (2022) The Gut Microbiome and Alzheimer’s Disease: Complex and Bidirectional Interactions. Neuroscience and Biobehavioral Reviews. doi: 10.1016/j.neubiorev.2022.104814