GERD
Gastroesophageal reflux disease, or GERD, can cause pain in the upper stomach and lower chest, aka heartburn. The cause? A valve that separates the stomach from the esophagus is weak, allowing food and acid from the stomach to splash upwards. Ouch! Eating too much food or the wrong type of food (fatty, for instance) can make it worse. Losing weight, watching what you eat, and medication like antacids, H2 blockers, and proton pump inhibitors can also help.