Serotonin - Brain and Body

Did you know that 90% of the body’s serotonin is found in the gut, where it triggers digestion and regulates intestinal movements? Stomach neurons use serotonin to signal back to the brain. This exchange of information can train a person not to eat certain foods by communicating pain, gas, and other uncomfortable sensations. Serotonin also functions in the central nervous system, affecting sleep, appetite, mood, memory, and learning.