Gut-Brain: The 2nd Brain in Your Gut
Gut feelings and butterflies in the stomach are real sensations rooted in physiology: many of the neurotransmitters that our brain uses are actually made in our gut, and our digestive tract is home to about 500 million nerve cells. We call this 2nd brain in our gut the enteric nervous system. Your gut influences your stress levels, anxiety, mood, and behavior. And your brain influences your gut motility, enzyme secretion in your GI tract, absorption of nutrients through your gut lining, and y...