If you’ve ever experienced heartburn after your morning coffee or a plate of pasta with marinara sauce, you’re not alone. Gastroesophageal reflux disease (GERD) is one of the most common digestive disorders in the United States, affecting approximately 1 in 5 adults. An estimated 15–20 million Americans experience heartburn every day, and more than 60 million people have acid reflux at least once a month.

Many people are told to “avoid trigger foods,” but few understand why these foods cause symptoms. The answer lies in how they affect the lower esophageal sphincter (LES), stomach acid production, stomach emptying, and the lining of the esophagus.

Although occasional heartburn is common, frequent reflux should not be considered a normal part of life. Left untreated, GERD can damage the lining of the esophagus, interfere with sleep, reduce quality of life, and increase the risk of complications such as esophagitis, Barrett’s esophagus, and esophageal cancer.

The good news is that many people can significantly improve their symptoms through nutrition and lifestyle changes. Understanding why certain foods trigger reflux—and adopting habits that support healthy digestion—can help reduce symptoms and improve long-term digestive health.

Start with an Elimination Trial

Everyone’s triggers are different. Instead of permanently avoiding a long list of foods, try eliminating the following foods for 2–4 weeks, then gradually reintroduce them one at a time while keeping a symptom diary.

Common GERD trigger foods include:

• • Coffee
  • Chocolate
  • Peppermint
  • Citrus fruits
  • Tomatoes and tomato-based sauces
  • Carbonated beverages
  • Spicy foods
  • Fried and high-fat meals
  • Foods high in added sugar
  • Alcohol
  • Onions and garlic

These foods may worsen reflux by relaxing the lower esophageal sphincter (LES), increasing stomach acid production, slowing stomach emptying, irritating the esophagus, or increasing pressure inside the stomach.

A symptom diary can help you identify which foods truly affect you.

Eating Habits Matter Just as Much as Food Choices

For many people, GERD is influenced more by how they eat than by any single food.

Symptoms are more likely when you:

• • Eat large meals
  • Eat too quickly
  • Lie down within 2–3 hours after eating
  • Wear tight clothing around your abdomen
  • Carry excess abdominal weight

Excess belly fat increases pressure on the stomach, making it easier for stomach contents to move upward into the esophagus.

Instead, aim to:

• • Eat smaller, more frequent meals.
  • Stop eating when you’re about 80% full.
  • Take 20–30 minutes to finish your meal.
  • Chew each bite 10–15 times.
  • Choose a light dinner at least 3 hours before bedtime.
  • Drink most fluids between meals rather than with meals.

Lifestyle Strategies That Can Make a Big Difference

Small daily habits often produce meaningful improvements in GERD symptoms.

Try these evidence-based strategies:

• • Elevate the head of your bed 6–8 inches while sleeping.
  • Take a 10–20 minute walk after meals to support stomach emptying and reduce bloating.
  • Avoid bending over immediately after eating.
  • Sleep on your left side, which helps keep the stomach below the esophagus.
  • Quit smoking if you smoke.
  • Maintain a healthy weight, especially if your BMI is above 25.
  • Practice stress management with mindfulness, abdominal breathing, or even humming before meals to stimulate the vagus nerve and support healthy digestion.

Taking 30 seconds to breathe deeply before eating can help shift your body into a relaxed “rest and digest” state.

Slow stomach emptying (delayed gastric emptying) may contribute to GERD in some individuals. When food remains in the stomach too long, pressure builds, increasing the likelihood of reflux.

If symptoms persist despite dietary changes, talk with your healthcare provider about whether additional evaluation is appropriate. This may include testing for H. pylori infection or a gastric emptying study, particularly if delayed stomach emptying is suspected.

It’s also important to know that GLP-1 medications used for diabetes and weight loss can slow stomach emptying and may worsen reflux symptoms in some people.

Foods That May Help Reduce Reflux

Instead of focusing only on what to avoid, build meals around foods that support digestion.

Choose more:

• • Cooked vegetables (especially non-tomato varieties)
  • Non-citrus fruits such as bananas, pears, apples, and melon
  • Lean proteins including fish, poultry, and tofu
  • Whole grains like oats, quinoa, and rice
  • Healthy fats in small portions, such as avocado and olive oil
  • Warm, simple, easy-to-digest meals
  • Ginger tea or ginger chews to support stomach motility
  • Chamomile tea to soothe the digestive tract

Increasing dietary fiber may also help. Research suggests that a fiber-rich diet can improve lower esophageal sphincter function, reduce reflux episodes, and decrease the frequency of heartburn.

The Bottom Line

GERD is rarely caused by just one food. More often, it’s the result of an overall eating pattern combined with lifestyle factors that affect digestion and stomach pressure.

A diet rich in vegetables, fruits, whole grains, legumes, lean proteins, nuts, seeds, and healthy fats—while limiting ultra-processed foods and added sugars—can support a healthy weight, improve digestion, reduce inflammation, and lessen reflux symptoms.

One of the simplest habits you can adopt is taking a 10–15 minute walk after meals. Combined with smaller meals, mindful eating, maintaining a healthy weight, and avoiding lying down after eating, this daily routine can naturally improve digestion and help keep GERD under better control.

Lisa is a registered dietitian with a degree in Administrative Dietetics from Brigham Young University. She has built a diverse career in clinical, long-term care, and community nutrition, including her work as a high-risk nutritionist for Women, Infants, and Children (WIC). Her lifelong mission is to help others heal and thrive through the power of food.