>Do you think drinking kombucha is good for gut health?

Thanks for the question!
Kombucha falls into the category of fermented foods which are foods or beverages produced with live cultures of microbes. Fermented foods contain live, beneficial bacteria that can lead to improvements in your gut microbiome. In addition, they contain a lot of compounds formed through the process of fermentation that are beneficial to you and the bacteria already in your gut (https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6306734/).
A recent study looked more closely how fermented foods alter a person’s gut microbiome. In this study, they showed that fermented foods increased the diversity of bacteria found in the gut. Diversity is a common measure used to characterize the gut microbiome, and generally the greater the diversity the healthier and more stable the person’s gut microbiome. Interestingly, few of these bacteria were actually from the fermented foods in the people’s diets. The study suggested it was because of the other components of the fermented foods, such as compounds produced during fermentation, that provide a more hospitable environment to new bacteria (https://pubmed.ncbi.nlm.nih.gov/34256014/).

-RM