Chapter 3 | Review & Discussion | The Mind Gut Connection by Emeran Mayer, MD Supplement Chapter 3 | Review & Discussion | The Mind Gut Connection by Emeran Mayer, MD Jefferey Metcalfe October 1, 2023 0 The Canary in the Coal Mine Did you know that coal miners used to place canaries in... Read More Read more about Chapter 3 | Review & Discussion | The Mind Gut Connection by Emeran Mayer, MD