Digestion & Mood: Anatomy & Physiology of the Digestive System

The gut is often called the second brain and is associated with feelings of happiness and well-being.

  • The Enteric Nervous System (ENS) is a system of nerves located in the abdomen.
  • The ENS communicates with the brain and can act independently of it.
  • It is often referred to as the “second brain.”
  • Ninety percent of serotonin, the neurotransmitter responsible for the feeling of happiness and well-being, is produced in the second brain.

Thus, as Elise Museles notes, “when you improve your gastrointestinal health, you’re simultaneously improving your mental health, too!”

Learn more: Anatomy for Yoga Teachers: ENS (Enteric Nervous System)