6. Digestive Issues | Coffee on an empty stomach
Our stomachs include hydrochloric acid that helps to Economically digest food. Drinking coffee on an empty stomach raises serotonin, and with no food to work as a buffer, this may quickly lead to digestive issues. Constantly having a lot of acid in your stomach can lead to damage to the digestive tract and cause other issues including nausea, nausea and irritable bowel syndrome.