Heartburn Problems
Heartburn and acid reflux can also be caused by coffee, because of the way it relaxes the lower esophageal sphincter.
The lower esophageal sphincter is a small muscle that should stay tightly closed when you have eaten to prevent the contents of your stomach from turning back into the esophagus and burning the delicate lining with hydrochloric acid.
Caffeine relaxes the esophageal sphincter due to this, Coke and high caffeine energy drinks contributes to heartburn.
