Heartburn
In reality, heartburn is a symptom that has nothing to do with the heart. It is a feeling of burning in the chest caused by the passing of stomach acid into the esophagus.
The stomach is a part of the digestive system. It’s where the food is kept temporarily. The enzymes and acids in the stomach are stronger enough to break down food and regulate the absorption of food into the small intestine as well. A slight lesion in the stomach is sufficient to cause so much discomfort and burning in the chest. If left untreated, ulcers can lead to severe infection in the abdominal cavity, causing perforations in the stomach wall.