The Gut-Brain Axis: Why 90 Percent of Serotonin Lives in Your Intestines
The Second Brain: Your intestines manufacture more of the chemicals that govern your mood than your brain does. Approximately 90 percent of the body’s serotonin — the neurotransmitter most associated with depression, sleep, and emotional stability — is produced not by neurons in your skull but by enterochromaffin cells in your gut wall. The implications … Read more