If you have GERD, the most important things to avoid are fatty and fried foods, eating within three hours of bedtime, and anything that puts pressure on your stomach, whether that’s tight clothing, excess weight, or certain exercises. Beyond those big three, your personal trigger list matters more than any universal do-not-eat list. The American College of Gastroenterology recommends avoiding your individual trigger foods rather than following a blanket elimination diet, since the scientific evidence behind many common dietary restrictions is surprisingly thin.
That said, some triggers are well-established enough to be worth testing. Here’s what to watch for across your diet, habits, medications, and daily routines.
Foods That Commonly Trigger Reflux
Fatty and fried foods are the most reliable dietary trigger. They sit in your stomach longer than other foods, which increases the window for acid to leak back up into your esophagus. This isn’t just greasy takeout: rich sauces, full-fat dairy, and fatty cuts of meat all have the same effect.
Other common triggers include spicy foods, tomato-based sauces, citrus fruits, chocolate, onions, and peppermint. These work through different mechanisms. Citrus contains compounds that can reduce the pressure of the muscular valve between your stomach and esophagus while also slowing stomach emptying. Peppermint has been shown in some studies to relax that same valve, though the evidence is inconsistent and may depend on the dose. Spicy and acidic foods, on the other hand, don’t necessarily cause more reflux episodes. They irritate an already-inflamed esophagus, making each episode feel worse.
The practical takeaway: start by cutting fatty meals, large portions, and carbonated drinks (which have moderate scientific support as a trigger). For everything else, pay attention to your own pattern. If tomatoes don’t bother you, there’s no strong reason to eliminate them.
Drinks That Make GERD Worse
Carbonated beverages consistently show up in research as a GERD trigger, and the National Institute of Diabetes and Digestive and Kidney Diseases specifically recommends avoiding them. The carbonation itself increases pressure inside your stomach.
Alcohol damages the protective mucus lining of your digestive tract and impairs the normal contractions of your esophagus that push acid back down. Interestingly, the ACG notes that different alcoholic beverages have different effects, and the overall evidence for a blanket recommendation against all alcohol is weak. Red wine and spirits tend to be reported as worse offenders than beer, but individual responses vary.
Coffee is a complicated one. The NIDDK recommends eliminating coffee, tea, and other caffeinated beverages. But the ACG’s own evidence review found the case for switching to decaf is “equivocal,” meaning there isn’t strong proof that caffeine itself is the problem. If coffee triggers your symptoms, avoid it. If it doesn’t, you may not need to give it up.
The Three-Hour Rule Before Bed
Stop eating at least three hours before you lie down. This is one of the most straightforward and effective changes you can make. When you’re upright, gravity helps keep stomach contents where they belong. Lie down with a full stomach and you remove that advantage entirely.
This applies to snacks too, not just full meals. A handful of crackers or a glass of milk right before bed can be enough to trigger nighttime reflux. If you tend to eat dinner late, shifting it earlier will likely do more for your symptoms than eliminating any single food.
How You Sleep Matters
Elevating the head of your bed makes a measurable difference for nighttime reflux. Wedge pillows designed for GERD typically sit at a 30- to 45-degree angle and raise your head between 6 and 12 inches. The key is elevating your entire upper body, not just propping up your head with extra pillows, which can actually kink your midsection and make things worse.
Side sleepers generally do better with memory foam wedges that have a contoured incline. Back sleepers benefit from a flatter, more supportive wedge. If you sleep on your stomach, wedge pillows won’t work for you, and that position tends to increase abdominal pressure anyway.
Sleeping on your left side is often recommended because of how the stomach sits anatomically. When you lie on your right side, the junction between your esophagus and stomach is essentially submerged in stomach contents, making reflux easier.
Tight Clothing and Abdominal Pressure
This one surprises people, but the evidence is striking. A study published in Gastroenterology found that wearing a tight belt increased acid reflux roughly eightfold compared to going without one. The belt raised pressure inside the stomach by about 7 to 9 mmHg, and it more than tripled the time it took the esophagus to clear acid after a reflux episode (from 23 seconds to over 81 seconds).
The effect was most pronounced after meals. Tight waistbands, shapewear, cinched belts, and snug high-waisted pants all create the same kind of compression. If you have GERD, looser clothing around your midsection, especially after eating, is a simple change that can make a real difference.
Exercise That Increases Reflux
Exercise is good for GERD overall, particularly because it helps with weight management. But certain types of exercise can trigger symptoms during or immediately after a workout. Anything that increases abdominal pressure or jostles your stomach is the issue: crunches, abdominal presses, heavy weightlifting, running, sprinting, cycling, and gymnastics are the most common culprits.
Exercises that require lying flat also allow reflux to occur more easily. Lower-impact activities like walking, light swimming, and yoga (avoiding inversions) tend to be better tolerated. Timing helps too: exercising on a full stomach is a reliable way to trigger symptoms, so aim for at least an hour or two after eating before working out.
Smoking and Nicotine
Smoking weakens the lower esophageal sphincter, the muscular valve that keeps stomach acid out of your esophagus. This isn’t a temporary effect that goes away between cigarettes. Chronic smoking progressively reduces the valve’s resting pressure, making reflux more likely around the clock. The ACG lists tobacco cessation as a standard recommendation for GERD management.
This applies to all forms of nicotine delivery, not just cigarettes. Vaping, nicotine patches, and chewing tobacco all introduce nicotine into your system, and nicotine is the compound responsible for relaxing the sphincter.
Medications That Can Worsen Symptoms
Several common medications make GERD worse through two different mechanisms. Some irritate the esophagus directly, essentially creating a chemical burn as they pass through. Others relax the sphincter valve or increase acid production.
Medications that irritate the esophagus include:
- Over-the-counter pain relievers like ibuprofen and aspirin
- Certain antibiotics, particularly tetracycline
- Iron and potassium supplements
- Osteoporosis medications (bisphosphonates) taken by mouth
Medications that can increase acid reflux itself include:
- Blood pressure and heart medications, including calcium channel blockers, ACE inhibitors, and nitrates
- Certain antidepressants (tricyclics like amitriptyline)
- Opioid pain medications
- Sedatives and anti-anxiety medications, including benzodiazepines
- Overactive bladder medications
- Progesterone
If you’re taking any of these and struggling with reflux, don’t stop them on your own. Bring the connection up with your prescribing doctor. In many cases there are alternative medications that won’t aggravate your symptoms, or adjustments like taking pills with a full glass of water and staying upright for 30 minutes afterward can minimize the irritation.
Large Meals and Eating Habits
How much you eat at once matters as much as what you eat. A large meal distends your stomach, increasing the pressure that pushes acid upward. Eating smaller, more frequent meals is recommended by the ACG, and the physiological reasoning is straightforward: less volume in the stomach means less pressure on the valve.
Eating quickly compounds the problem because you tend to swallow more air and overshoot your fullness signals. Slowing down, chewing thoroughly, and stopping before you feel stuffed are practical habits that reduce the mechanical forces driving reflux. If your symptoms are worst after dinner, splitting that meal into a smaller dinner and a later (but not too late) snack can help, as long as you respect the three-hour window before bed.