Factors such as diet, stress and irregular eating can lead to excessive acid production in the stomach, according to HealthGuidance. Spicy foods and greasy foods can increase acid production in the stomach, as can excessive consumption of fiber, which takes longer to digest, leading to greater acid production.
Both physical and mental stress as well as lack of sleep can contribute to the over production of acid in the stomach, according to HealthGuidance. When a person does not eat at regular intervals, secreted acid accumulates in the stomach, leading to an excess and making regular meals a priority in people prone to high stomach acid. A bacterial infection caused by H. pylori can lead to increased acid production as well. Stomach cancer and ulcers can also cause an excess in the production of gastrin, which stimulates the production of hydrochloric acid in the stomach. Because the causes of increased stomach acid can range from mild to severe, it is important to speak with a doctor regarding increased acid.
Dietary habits play a large role in stomach acid production, and keeping a journal to notate foods eaten throughout the day helps in determining the cause of excess acid production in the diet, according to HealthGuidance. Eating a snack between meals is also helpful in bringing the acid levels down.