A mouse study finds a remarkable microbial connection to fear.

A new study in Nature finds that gut microbes are essential for extinguishing the fear response in mice. This may help clinicians devise strategies for people with anxiety and post-traumatic stress disorder (PTSD). The study is the latest in a continuing exploration of the mechanics of the gut-brain axis.

https://www.psychologytoday.com/us/blog/mood-microbe/201910/unending-fear-and-the-gut-brain-axis