Bowl of oatmeal with blueberries and green apple chunks, with berries and apple halves nearby
Bowl of oatmeal with blueberries and green apple chunks, with berries and apple halves nearby

Acid Reflux Foods That Cause Heartburn: What to Avoid and What to Eat

Experiencing the discomfort of acid reflux, also known as heartburn, can be a common issue for many. Gastroesophageal reflux disease (GERD) occurs when stomach acid frequently flows back into the esophagus, leading to irritation. One of the most impactful ways to manage and prevent acid reflux symptoms is by understanding the connection between your diet and GERD. This means being aware of the Acid Reflux Foods That Cause flare-ups and choosing foods that can soothe your system.

Trigger Foods: Acid Reflux Foods to Avoid

It’s a common misconception that managing acid reflux means only eating bland foods. In reality, a diverse and flavorful diet is still achievable. However, identifying and limiting acid reflux foods that cause symptoms is crucial. Certain foods are known to be common culprits, increasing the likelihood of acid reflux and heartburn. These foods often share characteristics that can weaken the lower esophageal sphincter (LES), the muscle that prevents stomach acid from backing up, or they can directly irritate the esophagus.

Here are key categories of acid reflux foods that cause discomfort:

  • High-Fat and Fried Foods: These are significant acid reflux foods that cause issues because they take longer to digest and remain in the stomach for extended periods. This delayed gastric emptying increases pressure in the stomach and the chance of acid refluxing into the esophagus. Think of fried chicken, fatty cuts of meat, and greasy fast foods.
  • Spicy Foods: While not everyone reacts the same way, spicy foods are often listed as acid reflux foods that cause heartburn. The capsaicin in chili peppers, for instance, can irritate the esophagus and may slow down digestion.
  • Acidic Foods: Citrus fruits, tomato sauces, and vinegar are all acidic and can exacerbate heartburn. These acid reflux foods that cause problems by directly increasing the acid load in your stomach and irritating an already sensitive esophagus.
  • Chocolate: This popular treat can be an unexpected acid reflux food that cause symptoms for some. Chocolate contains caffeine and theobromine, which can relax the LES. It’s also high in fat, contributing to delayed stomach emptying.
  • Caffeine: Beverages and foods containing caffeine, such as coffee, tea, and energy drinks, are known acid reflux foods that cause issues. Caffeine can relax the LES, making it easier for stomach acid to escape into the esophagus.
  • Onions: Raw onions, in particular, can be problematic. They can increase stomach acid production and are considered acid reflux foods that cause bloating and gas, which can further contribute to reflux.
  • Peppermint: While often thought of as soothing, peppermint can actually relax the LES. This makes it one of the surprising acid reflux foods that cause heartburn for some individuals.
  • Carbonated Drinks: These beverages increase pressure in the stomach. The carbonation itself can force the LES to open, making carbonated drinks common acid reflux foods that cause discomfort.
  • Alcohol: Alcohol can irritate the stomach lining and relax the LES, making it easier for acid to reflux. Alcoholic beverages are definitely on the list of acid reflux foods that cause problems.

If you regularly consume these acid reflux foods that cause heartburn, consider eliminating them from your diet temporarily to see if your symptoms improve. You can then reintroduce them one at a time to pinpoint your specific triggers.

Foods to Embrace: Best Foods for Acid Reflux Relief

While knowing which acid reflux foods that cause heartburn is important, focusing on what you can eat is equally beneficial. Certain foods are naturally less likely to trigger reflux and can even help soothe your digestive system. Incorporating these into your diet can be a proactive step in managing GERD.

Here are some food categories that are generally well-tolerated and considered beneficial for people with acid reflux:

  • Non-Citrus Fruits: While citrus fruits are acid reflux foods that cause problems, many other fruits are excellent choices. Bananas, melons (like watermelon and cantaloupe), apples, and pears are examples of non-acidic fruits that are gentle on the stomach and provide essential nutrients.
  • Vegetables: Most vegetables are naturally low in fat and sugar, and they are good sources of fiber, making them ideal for managing acid reflux. While tomato sauce, due to its acidity, can be an acid reflux food that cause heartburn, fresh tomatoes in moderation might be tolerated. Experiment to see what works for you, and focus on incorporating a wide variety of other vegetables, especially leafy greens, broccoli, and carrots.
  • Lean Meats and Poultry: When choosing protein sources, lean meats like chicken breast, turkey, and fish are preferable. Prepare them by grilling, baking, poaching, or broiling rather than frying. Using fresh herbs for seasoning instead of spicy blends can also minimize the risk of triggering reflux. Avoid fatty cuts of meat as they are acid reflux foods that cause issues.
  • Oatmeal, Whole Grains, and Root Vegetables: These are excellent sources of complex carbohydrates and fiber. Oatmeal, whole-grain bread, brown rice, couscous, and potatoes are all good options. Fiber helps promote healthy digestion and can help absorb stomach acid, potentially reducing reflux symptoms.
  • Healthy Fats: Unsaturated fats from plant and fish sources are beneficial. Olive oil, sesame oil, canola oil, sunflower oil, avocados, nuts, seeds, and fatty fish like salmon and trout are better choices than saturated and trans fats, which are found in fried and processed foods and are acid reflux foods that cause problems.

Eating Habits for Acid Reflux Management

Beyond specific acid reflux foods that cause or alleviate symptoms, your eating habits play a significant role in managing GERD. Simple changes to how you eat can make a big difference in reducing heartburn and acid reflux episodes.

Consider these dietary habits:

  • Eat Smaller, More Frequent Meals: Large meals can distend the stomach and increase pressure on the LES, making reflux more likely. Smaller, more frequent meals are easier to digest and can reduce stomach pressure.
  • Avoid Lying Down After Eating: Gravity helps keep stomach acid down. Lying down, especially immediately after eating, allows acid to flow more easily into the esophagus. Wait at least 2-3 hours after eating before lying down or going to bed. Avoid napping right after lunch and late-night suppers.
  • Elevate Your Head While Sleeping: Using extra pillows or raising the head of your bed slightly can help keep stomach acid in the stomach while you sleep.
  • Avoid Eating Before Vigorous Exercise: Strenuous exercise shortly after eating can force stomach acid into the esophagus. Wait a couple of hours after eating before engaging in intense physical activity.
  • Chew Food Thoroughly: Digestion begins in the mouth. Chewing your food thoroughly breaks it down into smaller particles, making it easier for your stomach to digest and reducing the likelihood of reflux.

By understanding which acid reflux foods that cause heartburn and adopting healthier eating habits, you can take significant steps to manage your GERD symptoms and improve your overall comfort. While occasional indulgence in trigger foods might be possible, particularly if you are managing symptoms with medication, a consistent focus on a reflux-friendly diet is key to long-term relief.


About the Author

Jenette Restivo, Health Writer; Assistant Director for Digital Content Creation and Engagement, Harvard Health Publishing

Jenette Restivo is a Health Content Writer and Assistant Director for Digital Content Creation and Engagement at Harvard Health Publishing. Jenette is a media professional with a 15+ year career creating strategic content for broadcast, nonprofits, and websites. … See Full Bio

View all posts by Jenette Restivo

About the Reviewer

Lawrence S. Friedman, MD, Contributor; Editorial Advisory Board Member, Harvard Health Publishing

Dr. Lawrence Friedman is the Anton R. Fried, MD, Chair of the department of medicine at Newton-Wellesley Hospital, assistant chief of medicine at Massachusetts General Hospital, and a professor of medicine at Harvard Medical School and … See Full Bio

View all posts by Lawrence S. Friedman, MD

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