Studies have shown that the human microbiome may actually play a very crucial role in the brain and mental health states. It is now understood that there are signaling pathways between the brain and gut microbiome which makes sense because feelings of distress/anxiousness are often accompanied by a stomach ache. A healthy, diverse microbiome may promote healthier mental states and reduce the risk of mental health conditions including anxiety, depression, etc. For instance, a healthy human microbiome may help the brain respond to different emotional stimuli in a healthier way. Brain and mental health states may influence microbial communities as well. A healthy mental health state may encourage healthier life choices/habits.
