One cause of heartburn is overproduction of stomach acid. frequent heartburn could be caused by which of the following? overproduction of cholecystokinin underproduction of cholecystokinin overproduction of gastrin underproduction of gastrin

The answer is overproduction of gastrin.

When too much gastrin is secreted, it causes the stomach to produce too much acid; therefore, resulting in heartburn.

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note: for words found inappropriate, i spelled them out in the phonetic alphabet in parenthesis, so take the first letter of each word to get the word i was trying to spell