“Scientists at the University of Louisville have shown that a microbial metabolite, Urolithin A, derived from a compound found in berries and pomegranates, can reduce and protect against inflammatory bowel disease (IBD).”
Read more here.
Paper: https://www.nature.com/articles/s41467-018-07859-7
Singh, R., Chandrashekharappa, S., Bodduluri, S.R. et al. Enhancement of the gut barrier integrity by a microbial metabolite through the Nrf2 pathway. Nat Commun10, 89 (2019). https://doi.org/10.1038/s41467-018-07859-7