Answer :We can find no published scientific research on almonds and heartburn (or GERD, gastroesophageal reflux disease), so at this point wed have to characterize this as a home remedy. There has been research, however, on possible benefits for almonds as prebiotics affecting the gastrointestinal (GI) tract. Prebiotics are foods that we cant digest but that the good bacteria in your GI tract can use. Studies at the Institute of Food Research in the UK, published in Applied and Environmental Microbiology, have shown prebiotic effects from almonds in laboratory tests. These prebiotic effects are really not confirmed, howeer, cautions Robert M. Russell, MD, professor emeritus at the Friedman School, and even if confirmed wont affect reflux. But theres no question that almonds are high in fiber, which is good for your gut: One ounce of almonds contains 3.5 grams of fiber.