A number of upper gastrointestinal tract conditions, such as non-functional dyspepsia and acid reflux, can cause a sour stomach, explains HealthHype.com. A sour stomach may result from overeating, consuming spicy foods and eating too quickly. Excessive intake of alcoholic, carbonated and caffeinated beverages, including cola, coffee and tea, is also known to cause a sour stomach. A sour stomach may also result from lying flat and performing strenuous physical activities immediately after eating.
The term "sour stomach" often refers to a variety of symptoms related to disturbances in the upper gastrointestinal tract, as clarified by HealthHype.com. These symptoms include regurgitation, nausea and stomach bloating. Other symptoms, such as heartburn, stomach ache, abdominal distension and a bad taste in the mouth, may also be present in individuals with a sour stomach.
Although a sour stomach is often caused by an acute condition, it can also result from chronic gastrointestinal disorders, including peptic ulcer and gastritis. A sour stomach that occurs with diarrhea and vomiting may be caused by gastroenteritis, according to HealthHype.com. Gastroenteritis can also result from food infections or poisoning.
Antacids can typically relieve a sour stomach. Avoiding fatty foods, eating small portions and performing moderate physical activities after eating are some ways to prevent a sour stomach. Individuals should likewise avoid food intake close to bedtime, as HealthHype.com advises.