A diet that emphasizes low-fat and high-protein choices can help treat or reduce symptoms of acid reflux, reports WebMD. Foods that typically cause heartburn include citrus fruits, tomatoes, onions, garlic, alcohol and caffeinated beverages. Fatty and spicy foods are also known as common triggers.
Foods naturally contain acids, according to WebMD. Low-acid foods that do not trigger heartburn include melons, bananas, oatmeal, whole-grain breads and green vegetables. Lean poultry and meats are excellent sources of protein, so long as the skin is removed and the meat baked, grilled, broiled or steamed. Grilled, baked and poached fish without sauces are good meat substitutes.
Unfortunately, nutrition labels do not list a food's acidity, warns WebMD. Additional research is generally needed, usually via government sites. The lower the pH label, the higher the acid, and heartburn is generally triggered by foods with a pH level lower than 5.0.
Some herbs and spices are believed to relieve or prevent heartburn, though these claims have not been tested, as of 2015, reports WebMD. Fennel, ginger, parsley, and aloe vera are low in acid and work to prevent stomach upset. However, WebMD also warns that heartburn-relieving foods do not work to counteract trigger foods. Furthermore, diet is not guaranteed to relieve heartburn, especially if the cause of acid reflux is related to the gastric juices instead of the acidity of food.