definition of heartburns

During digestion, stomach produces gastric juices that help and participate in the digestion and absorption of food by the body.
The gastric juices are very acidic and when they go back into the esophagus, they are called, that attack and weaken it.
The esophagus is more fragile than the stomach, where the burning sensation in this part following.
The lift acids amplified by stress that is causing over-production of gastric juices, added to that the absorption of certain medications.
Other causes trigger stomach acid.