Does Intermittent Fasting Cause Acid Reflux?

Intermittent fasting has been gaining popularity as a way to improve health, lose weight, and boost energy levels. However, some people have reported experiencing acid reflux while following an intermittent fasting diet. This has led to questions about whether intermittent fasting causes acid reflux and if there are ways to prevent it.

Acid reflux, also known as gastroesophageal reflux disease (GERD), is a condition where stomach acid flows back into the esophagus, causing discomfort and sometimes damage to the lining of the esophagus. While intermittent fasting has been shown to have numerous health benefits, it may not be suitable for everyone. In this article, we will explore the link between intermittent fasting and acid reflux and provide tips on how to prevent it.

Intermittent fasting may cause acid reflux in some people, but it’s not a common side effect. Fasting can increase stomach acidity levels, leading to discomfort. However, eating a healthy diet and avoiding trigger foods during non-fasting periods can help prevent acid reflux. Drinking plenty of water and staying hydrated can also help reduce symptoms.

Does Intermittent Fasting Cause Acid Reflux?

Does Intermittent Fasting Cause Acid Reflux?

What is Intermittent Fasting?

Intermittent fasting has become a popular trend in recent years, with many people using it as a tool to lose weight, improve their health, and increase their longevity. Intermittent fasting involves restricting your eating to a certain period of time, usually between 6-8 hours a day, and then fasting for the remaining 16-18 hours. There are different types of intermittent fasting, including the 16/8 method, the 5:2 diet, and alternate-day fasting.

What is Acid Reflux?

Acid reflux, also known as gastroesophageal reflux disease (GERD), is a condition where stomach acid flows back up into the esophagus, causing symptoms such as heartburn, regurgitation, and difficulty swallowing. Acid reflux can be caused by various factors, including certain foods, obesity, pregnancy, and smoking.

The Relationship Between Intermittent Fasting and Acid Reflux

There have been some concerns that intermittent fasting may cause acid reflux, as fasting can increase the production of stomach acid. However, there is limited research on the topic, and the existing studies have shown mixed results.

Some studies have suggested that intermittent fasting may actually help reduce the symptoms of acid reflux. For example, a 2014 study published in the Journal of Gastroenterology and Hepatology found that intermittent fasting improved symptoms in patients with GERD. Another study published in the World Journal of Gastroenterology in 2017 found that intermittent fasting reduced the frequency and severity of acid reflux episodes in obese individuals.

On the other hand, some studies have shown that fasting can increase the risk of acid reflux. A 2018 study published in the Journal of Neurogastroenterology and Motility found that fasting increased acid reflux in healthy individuals. Another study published in the Journal of Clinical Gastroenterology in 2015 found that fasting increased the frequency and duration of acid reflux episodes in patients with GERD.

The Benefits of Intermittent Fasting for Acid Reflux

Despite the conflicting results, there are some potential benefits of intermittent fasting for acid reflux. For example, intermittent fasting can help promote weight loss, which is a known risk factor for acid reflux. In addition, intermittent fasting can improve insulin sensitivity and reduce inflammation, which may also help improve symptoms of acid reflux.

The Drawbacks of Intermittent Fasting for Acid Reflux

While intermittent fasting may have some potential benefits for acid reflux, there are also some drawbacks to consider. For example, fasting can increase the production of stomach acid, which can exacerbate acid reflux symptoms. In addition, fasting can cause dehydration, which can also worsen acid reflux symptoms. Finally, intermittent fasting can be difficult to follow and may lead to binge eating, which can also trigger acid reflux.

Intermittent Fasting vs. Other Diets for Acid Reflux

Intermittent fasting is not the only diet that can help improve symptoms of acid reflux. Other diets that have been shown to be effective include the Mediterranean diet, which emphasizes fruits, vegetables, whole grains, and healthy fats, and the low FODMAP diet, which limits foods that are high in fermentable carbohydrates.

One advantage of intermittent fasting over these diets is that it does not require you to limit specific foods or food groups, which can make it easier to follow. However, if you have certain dietary restrictions or food sensitivities, a more tailored diet plan may be more appropriate.

How to Reduce the Risk of Acid Reflux During Intermittent Fasting

If you are considering intermittent fasting but are concerned about the risk of acid reflux, there are some steps you can take to minimize your risk. First, try to avoid eating high-fat or spicy foods during your eating window, as these can trigger acid reflux symptoms. Second, stay hydrated by drinking plenty of water during your fasting period. Finally, consider taking an antacid or acid reducer medication if needed to help manage symptoms.

The Bottom Line

Intermittent fasting may have some potential benefits for acid reflux, but there is limited research on the topic and the existing studies have shown mixed results. While intermittent fasting may be a useful tool for weight loss and overall health, it may not be suitable for everyone, especially those with acid reflux or other gastrointestinal conditions. If you are considering intermittent fasting, it is important to talk to your healthcare provider first to determine if it is safe for you.

Frequently Asked Questions

Intermittent fasting has become a popular trend among those who want to lose weight or improve their overall health. However, some people have concerns about whether this diet can cause acid reflux. Here are some frequently asked questions and answers that can help you understand this issue better.

What is intermittent fasting?

Intermittent fasting is an eating pattern that involves alternating periods of fasting and eating. The most common method is the 16/8 method, which involves fasting for 16 hours and eating within an 8-hour window. Some people fast for longer periods, such as 24 hours or more. The idea behind intermittent fasting is to give your body a chance to rest and repair, which can lead to improved health and weight loss.

However, if you have acid reflux, you may be concerned about whether intermittent fasting can exacerbate your symptoms. The short answer is that it depends on the individual.

What causes acid reflux?

Acid reflux occurs when the contents of your stomach flow back into your esophagus. This can cause a burning sensation in your chest, throat, or mouth. Some common causes of acid reflux include overeating, eating spicy or fatty foods, drinking alcohol or caffeine, smoking, and being overweight or obese.

While acid reflux is a common condition, it can be uncomfortable and even painful. If you experience frequent acid reflux, you should speak to your doctor about treatment options.

Can intermittent fasting cause acid reflux?

Intermittent fasting can be beneficial for some people with acid reflux, as it can help reduce the amount of acid in the stomach and improve digestion. However, others may find that fasting exacerbates their symptoms. If you have acid reflux and are considering intermittent fasting, it’s important to talk to your doctor first and monitor your symptoms carefully.

If you do decide to try intermittent fasting, you may want to start with shorter fasts and gradually increase the length of your fasts over time. You may also want to avoid eating spicy or fatty foods during your eating window, as these can trigger acid reflux symptoms.

What are some other ways to reduce acid reflux?

If you have acid reflux, there are several lifestyle changes you can make to reduce your symptoms. These include:

  • Eating smaller, more frequent meals
  • Avoiding spicy or fatty foods
  • Not lying down or going to bed immediately after eating
  • Elevating the head of your bed
  • Quitting smoking
  • Losing weight if you are overweight or obese

If these lifestyle changes do not improve your symptoms, your doctor may recommend medication or surgery to treat your acid reflux.

When should I see a doctor for acid reflux?

If you experience frequent or severe acid reflux, you should speak to your doctor. They can help determine the underlying cause of your symptoms and recommend treatment options. In some cases, acid reflux can lead to more serious conditions, such as esophagitis or Barrett’s esophagus, so it’s important to seek medical attention if your symptoms persist.

Your doctor may recommend lifestyle changes, medication, or surgery, depending on the severity of your acid reflux.

Does Fasting Helps Acid Reflux?


In conclusion, while there is some evidence to suggest a potential link between intermittent fasting and acid reflux, it is important to note that everyone’s body is different. Some individuals may experience symptoms, while others may not. It is also possible for acid reflux to be caused by a variety of other factors, such as diet or stress.

If you are considering trying intermittent fasting and are concerned about acid reflux, it may be helpful to talk to your doctor to see if it is a safe option for you. Additionally, making sure to stay hydrated and avoiding trigger foods may also help reduce symptoms.

Ultimately, it is up to each individual to weigh the potential benefits and risks of intermittent fasting and make an informed decision. By listening to your body and taking steps to manage any symptoms that arise, you can find a way of eating that works best for you.

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