Have you been keeping up with the studies about neurons throughout the body? Most people are familiar with the concept of neurons in the brain. Fewer seem aware of the fact that there are neurons in the heart, the solar plexus, the gastrointestinal track, and so on. Estimates are that there are upwards of a million neurons in your gastrointestinal track or GI system. It reportedly also contains 90% of all the serotonin in your brain and body along with 50% of all the dopamine. That puts a slightly different twist on the brain-GI connection. Have you ever heard someone comment, “You give me a pain in my stomach!” When your conscious thoughts are of an upsetting nature (e.g., you have a pain in your brain), the neurons in your gut pick them up and can trigger a GI upset, for real.