Heartburn also known as GERD (gastro esophageal reflux disease) is a huge problem today. This is stomach acid coming up from the stomach, through the throat and into the mouth. The stomach acid burns the throat and causes the teeth to decay. Most of the time people are unaware this is going on. Over time the throat tissue can scar and make it difficult to swallow and teeth can crumble away due to chronic exposure to the stomach acids. If you have any heart burn at all, see your doctor and get it checked out, because it may be a lot worse than you realize. In addition to medications, there are a lot of changes you can make in your diet to help.