Is Bad Breath from Stomach? Causes, Symptoms and Treatment

Most people who have bad breath due to the digestive system describe a rotten egg smell. This is caused by the intestinal microbiota that breaks down sulfur and releases egg-smelling gas. However, the smell is more putrid and rotten. Breath that smells sulfuric, similar to the smell of rotten eggs, may indicate a problem with the digestive tract.

When healthy gut microbes break down sulfur, a gas that smells like sulfur is released. This may be due to GERD or gastroesophageal reflux disease, which occurs when stomach acids leak from the stomach into the esophagus, or it may indicate other problems with the digestive system. Chronic acid reflux, also known as gastroesophageal reflux disease (GERD), is a medical condition. Acid reflux is the reverse flow of stomach contents, such as undigested food, regurgitated bile, and stomach acids, into the esophagus.

This can cause bad breath. Microbial accumulations, infections, or growths in the sinuses can cause the breath to smell like fungi or mold. While strict oral hygiene habits and dietary changes, such as quitting smoking, can help eliminate halitosis, there are some types of bad breath that may indicate a major health problem. Or, if you notice that your breath smells like ammonia, it could be the result of a kidney infection or chronic illness.Some people worry too much about their breath even though they have little or no smell in their mouths, while others have bad breath and don't know it.

If the kidneys suffer significant damage, they can lose their ability to filter these toxins from the blood, allowing waste and toxins to build up in the body and cause fishy smelling breath.

What Causes Bad Breath from Stomach?

The first step in treating bad breath, or halitosis, that seems to come from the stomach is to determine its cause. If you are constipated and your breath smells like feces, it's imperative that you seek immediate medical attention, as you are likely to have an intestinal obstruction or an intestinal obstruction.When this postnasal drip builds up and combines with microbes, food particles, and metabolites, it can cause bad breath. The type of bad breath you have can help your doctor determine any underlying medical problems, so if you have any of the types of halitosis described below, see your dentist and doctor to treat your bad breath and the underlying problem.

How to Diagnose Bad Breath from Stomach?

When it comes to bad breath, obvious offenders, such as strong-smelling foods or poor oral hygiene, are often the most important.

Because it's difficult to assess how your own breath smells, ask a close friend or family member to confirm your questions about bad breath. If your breath smells like stools, you may have an intestinal obstruction or an intestinal obstruction. It's understandable that your breath smells like garlic during the hours after eating garlic, for example. Still, understanding the causes of bad stomach breath can help you decide if your breath is due to a garlic lunch or something more serious.

Treatment for Bad Breath from Stomach

Treatment for bad breath caused by digestive issues depends on what is causing it. If GERD is causing your bad breath then medications such as antacids can help reduce acid reflux and reduce bad breath. If an infection is causing your bad breath then antibiotics may be prescribed to treat it. If constipation is causing your bad breath then increasing fiber intake and drinking plenty of water can help relieve constipation and reduce bad breath.

In addition to treating any underlying medical conditions that may be causing bad breath from stomach issues, there are some lifestyle changes you can make to help reduce bad breath. These include brushing your teeth twice a day with fluoride toothpaste; flossing daily; drinking plenty of water; avoiding sugary foods; avoiding smoking; avoiding alcohol; eating probiotic-rich foods; chewing sugar-free gum; and using mouthwash regularly.


Bad breath caused by digestive issues can be embarrassing and uncomfortable but there are treatments available that can help reduce it. It's important to identify what is causing your bad breath so that you can get proper treatment for it.

If you think you may have bad breath caused by digestive issues then talk to your doctor about it so they can diagnose and treat it.

Aimee Janoski
Aimee Janoski

Devoted bacon scholar. Professional internet practitioner. Lifelong web evangelist. Typical tvaholic. Passionate internet enthusiast.

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