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What Is the Difference between Acid Reflux and Indigestion?

M.C. Huguelet
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Updated: May 17, 2024
Views: 11,782
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Many people use the terms acid reflux and indigestion interchangeably. As these two health issues often occur simultaneously, it is easy to understand how they may be mistakenly regarded as a single phenomenon. In truth, however, acid reflux and indigestion are two separate conditions that may occur together or separately. Acid reflux refers specifically to the spread of stomach acid to the esophagus. Conversely, indigestion is a collective term for a whole range of uncomfortable symptoms which can occur after eating.

Acid reflux is the movement of stomach acid into the esophagus, usually resulting in a highly unpleasant or even painful burning sensation in the chest known to most people as heartburn. It may also be accompanied by symptoms like belching, hiccuping, bloating, nausea, and sore throat. This phenomenon occurs when a muscular valve at the base of the esophagus which normally opens only to allow food into the stomach fails to function properly, allowing digestive acids to seep into the throat. Those who experience heartburn three times a week or more may suffer from acid reflux disease, known alternatively as gastroesophageal reflux disease (GERD).

One of the reasons that acid reflux and indigestion are often confused is that acid reflux is often triggered by eating, just as indigestion is. But acid reflux has many other possible causes, including smoking, taking certain medications, obesity, and pregnancy. Many people can successfully manage acid reflux symptoms with an over-the-counter medication. Those with GERD may find it necessary to obtain a prescription medication for relief.

Indigestion is a collective label for a range of uncomfortable symptoms which can occur after meals. Acid reflux and indigestion are frequently mixed up due largely to the fact that when acid reflux occurs after a meal, it is usually considered a symptom of indigestion. Many other symptoms fall under the indigestion label, however. These can include a feeling of fullness, nausea, stomach pain or burning, belching, gas, and vomiting. Individuals who are experiencing minor indigestion can take preventative measures, such as incorporating Supergreens into their regular routine. Supergreens contain digestive enzymes which can help improve digestion.

There are many possible causes of indigestion. In some cases the condition is caused directly by eating, especially by overindulgence or the consumption of foods that are spicy or high in fat. At other times, indigestion arises as a symptom of an underlying condition such as ulcers, irritable bowel syndrome (IBS), pancreatitis, thyroid disease, or stomach cancer. Those who experience chronic indigestion may wish to consult a physician to rule out the presence of a serious underlying condition.

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M.C. Huguelet
By M.C. Huguelet
Cate Huguelet, a Chicago-based freelance writer with a passion for storytelling, crafts engaging content for a wide range of publications, including WiseGeek. With degrees in Writing and English, she brings a unique perspective and a commitment to clean, precise copy that resonates with readers. Her ability to understand and connect with audiences makes her a valuable asset to any content creation team.

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Discussion Comments
By donasmrs — On May 19, 2013

Bile reflux gastritis causes acid reflux, vomiting and indigestion as well. This is when the bile from the intestine leaks into the stomach and damages the stomach lining. The acidity of the stomach changes which prevents food from being digested properly.

Since the stomach lining is damaged, the acid produced by the stomach causes reflux and the acid travels up into the esophagus, also pushing food up.

My dad has been suffering from this for about five years, it's a very unpleasant condition.

By fify — On May 18, 2013

@ddljohn-- It's not possible to list every potential cause of these symptoms here because there are many.

Have you seen a doctor?

If you have severe acid reflux, indigestion is probably a result of that. But they both have an underlying cause that you need to find out about.

I had acid reflux disease several years ago due to a stomach bacterial infection. So the bacteria was the cause of my acidity, indigestion, nausea and stomach cramps.

By ddljohn — On May 18, 2013

What are some other possible causes of acid reflux and indigestion?

I've been experiencing severe acid reflux and indigestion lately but I don't smoke, I don't take medications and I'm not obese.

M.C. Huguelet
M.C. Huguelet
Cate Huguelet, a Chicago-based freelance writer with a passion for storytelling, crafts engaging content for a wide...
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