Despite these advances, we don't yet know how, or if, probiotic supplements can improve our mental health by influencing gut bacteria. First a brief sampling of the latest bacteria-brain research, which includes a study that found specific hormonal exchanges enabling communication between gut bacteria and the brain. Researchers exposed these mice to gut bacteria and watched what happened compared to mice that were raised in a normal, germy environment. While re-populating the gut with good bacteria sounds plausible, there’s little scientific clarity around which gut bacteria are objectively “good” or if that qualification is even valid. We simply don’t know enough to know for sure.

Source: Forbes August 27, 2017 13:30 UTC