A stomach ache or indigestion without any clear reason could seem to point to a GI issue, but heart disease can also cause this symptom or, more likely, chest pain that is mistaken for indigestion or a stomach ache. This misidentification can result in a delay in treatment. The cause is a reduction of the blood supply to the heart, and the symptom usually follows a blockage in the cardiac arteries. This can result in angina marked by symptoms like cramping and pain.
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