Upper gastrointestinal endoscopy also known as esophago-gastro-duodenoscopy or EGD is a common way of diagnosing GERD. Eating large meals and eating before bed are two other main reasons for reflux. Eat more fiber to keep your digestive tract moving and healthy. Make sure to stir the mixture well until it is cloudy from the starch. Warning: Never use vinegar undiluted. Apples have a natural tendency to balance stomach acid as well. Licorice Try not to lie down within a few hours of eating to prevent GERD symptoms. Sleisenger and Fordtran's Gastrointestinal and Cure acid reflux naturally during pregnancy Disease .