As a GERD sufferer, I've noticed how much my sleep quality is affected by this condition. Gastroesophageal Reflux Disease, or GERD, causes stomach acid to flow back into the esophagus, which can lead to discomfort and disrupted sleep. This is because lying down makes it easier for acid to flow back up, especially after a heavy meal or eating too close to bedtime. Not only does this cause heartburn and other symptoms, it can also result in poor sleep quality, leaving us feeling tired and unrefreshed the next day. To improve our sleep, it's essential to manage GERD through lifestyle changes, eating habits, and medication as needed.