Brain Chemical Made in the Gut Linked to Emotion and Depression!

Serotonin is probably best known as a brain chemical that affects emotions and behavior, an imbalance of which is thought to contribute to depression. Less well-known is that scientists estimate 90% of serotonin is made in the gut, and imbalances in this peripheral serotonin have been linked to diseases ranging from irritable bowel syndrome and cardiovascular disease, to osteoporosis.

Gut microbes important for serotonin production. Medical News Today. Catharine Paddock, Ph.D. April 21, 2015. http://www.medicalnewstoday.com/articles/292693.php