Gastroenterology is devoted to the digestive system – more specifically, all that can go wrong with the digestive system, leading to common ailments such as heartburn, hernias, gallstones, acid reflux and ulcers. While digestive discomfort isn’t unusual, pinpointing the cause can be difficult – so if those antacids aren’t working or you’re wondering about the difference between irritable bowel syndrome and inflammatory bowel disease, our expert has the answers.