In general, the microorganisms you have in your gut today will not be there next month and if they are, they will almost certainly be gone next year. Also, the abundance of specific bacteria in the gut can rapidly change over the course of a few days. We are very interested in factors (host and microbial) that influence these dynamics; how this level of change influences human health and disease; and how we can  develop novel microbiome-focused treatment and prevention strategies. Check out results from one of our studies in healthy humans (Martinson et al. ISME J. 2019).