Stomach has a mechanism of breaking down food material with stomach acid. Acid in stomach mostly consists of hydrochloric acid, a strong chemical produced by the gastric glands and parietal cells that line the stomach. Heartburn is mainly due to regurgitation of acid content from the stomach to esophagus (the food pipe. The muscle tube connecting the mouth to the stomach, the oesophagus (or gullet), can occasionally malfunction, pushing acid upward. Normally, the esophageal sphincter, a unique muscle valve located where the oesophagus and stomach converge, ensures one-way passage from the esophagus to the stomach. It opens when you eat to let food into the stomach, but it should stay tightly closed the rest of the time to prevent the contents of the stomach from coming back up.
When the contents of the stomach, including food and gastric secretions, reflux back up into the oesophagus due to valve malfunction (permanently or temporarily), acid reflux happens causing heartburn and can lead to ulcers that can be extremely painful if it is severe and lasts for a long time.
Moreover, acid reflux is not brought on by excessive stomach acid; rather, it is a result of acid travelling in the incorrect direction. Excessive intake of fried foods, alcohol, smoking, and lack of exercise, can affect heartburn. However, these are not the only factors; but these are simply avoidable.
Causes of heartburn
Heartburn symptoms
Some remedies for heartburn
What to do if heartburn is severe or frequent?
If you frequently experience heartburn, talk to the doctor before taking heartburn medications on a regular basis because these medications can interact with a wide range of other medications and have an impact on any underlying medical disorders you may have.
Consult the doctor if you experience persistent or worsening heartburn despite taking measures to alleviate it. Heartburn can occasionally be a symptom of an underlying illness, such as gastroesophageal reflux disease (GERD), or peptic ulcer disease.