Gastroesophageal reflux disease, or gerd, is a digestive disorder that affects the lower esophageal sphincter (les), the ring of muscle between the esophagus and stomachmany people, including. Gastroesophageal reflux disease or gerd. Gastroesophageal reflux disease (gerd) is a digestive disorder that occurs when acidic stomach juices, or food and fluids back up from the stomach into the esophagus gerd affects people of all ages—from infants to older adults people with asthma are at higher risk of developing gerd asthma flare-ups can cause the lower esophageal sphincter.
gastroesophageal reflux disease or gerd
