Gut microbiota: Recent high-level scientific studies on the clinical validation and benefits of novel food supplements

Scientific and consumer interest in the role of the gut microbiome has increased significantly in recent years. With continued innovation in different types of dietary supplements and the recent surge in gut microbiome research and development, it is expected to see continued improvement and potential scientific breakthroughs. What are the latest sources of scientific evidence for microbiome related innovations?  What are the new ingredient combinations or formulations for pre/pro/postbiotics? What is the basis for their clinical validation?