There are good scientific reasons to tend to your microbiome. Having a diverse assortment of gut bugs, with plenty of the good kind, seems to confer broad health benefits. Here is how to go about it https://www.economist.com/science-and-technology/2025/07/18/do-probiotics-work?taid=6985002bba85ed00014b96d1&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=twitter