Unbelievably, the acidity in your stomach is much the same as the acid used in your car battery. Knowing that fact, it should come as no surprise, that heartburn is so painful when that same acid comes up into the oesophagus. In some cases, vomit arises resulting from a weakened or relaxed oesophageal valve. In other cases, the acid vapours cause tightness in the chest and temporarily disrupts oxygen flow to the heart, making many people fear they are having a heart attack. Every year, over four and a half million Americans visit their doctors with the symptoms of acid reflux GERD otherwise known as Gastroesophageal Reflux Disease.
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