The main cause of heartburn is when the stomach acid backs up or refluxes to the esophagus. This can happen for several reasons. The first is when the lower esophageal sphincter or LES is weakened or relaxed and doesn t do its job properly. The LES is what keeps the stomach acid in the stomach. Basically, this is the most common symptom for GERD or Gastroesophageal Reflux Disease. By cleaning your digestive system from toxins, stomach acid production will decrease, which in turn will also decrease the likelihood of heartburn. You should also drink plenty of water instead of taking carbonated drinks. If you can, try to drink water that is in room temperature. This will help flush down toxins and it will also help dilute the acid in your stomach. So, what are the foods that you can eat and what are the foods that you should avoid? Foods To Avoid If you constantly experience heartburn, you may want to cut down on the consumption of citrus fruits. You have to remember that citrus fruits and juices are acidic in nature. You need to keep in mind that your goal is to stop acid from reaching your esophagus and by eating citrus fruits, which are acidic in nature, you are worsening the problem. When this happens, the acid in your stomach will come in contact with the esophagus, which ultimately causes you to experience what we all know as heartburn. As a chronic heartburn sufferer, you have to know about the contributing factors. One is called GERD or Gastroesophageal Reflux Disease. This is a common disease that is characterized by the stomach acid flowing backward in to the esophagus repeatedly. It can really be frustrating experiencing this condition especially when the weather is hot or warm. If you are pregnant, you have to be prepared to experience heartburn as this will be very common. Now, you need to keep in mind that although this condition is painful and extremely uncomfortable to experience, it is a condition that will not harm the baby inside your tummy. If not treated, heartburn can result to a more serious condition, such as scarring of the esophagus and on rare cases, it can even cause cancer of the esophagus. So, what causes you to experience heartburn? Primarily, diet is the main culprit for experiencing heartburn. Certain foods are notorious for causing heartburn.