In my research, I've found a significant link between acid reflux and coughing. Acid reflux, or GERD, occurs when stomach acid flows back into the esophagus, causing discomfort and potentially leading to chronic coughing. This happens as the acid irritates the throat and airways, leading to persistent cough. It's important to note that this cough is often dry and typically increases after eating or when lying down. So, if you've been dealing with a nagging, unexplained cough, it may be worth checking in with your doctor about the possibility of acid reflux.