How to Cure Bad Breath Coming from Stomach For Good

How to Cure Bad Breath Coming from Stomach For Good

Figuring out how to cure bad breath coming from stomach is a problem many people face everyday. So if you feel like you’re alone think again. This problem affects millions of people around the world and can make living a healthy social and professional life difficult.

People just automatically assume you’re not taking care of yourself when they smell a funky odor coming from your mouth. The truth is, if you suffer from halitosis it doesn’t matter how often or how well you brush your teeth.

Your bad breath will continue to persist until you fix the underlying problem. Usually the underlying cause is inside your mouth. If you want to stop bad breath from your mouth you’ll have to take care of things like oral bacteria, leftover food particles, mucus, and other debris inside your mouth that produce the smelly sulfur compounds.

Your Stomach & Bad Breath

bad breath from stomach

However, for some people suffering from chronic bad breath the cause isn’t coming from their mouth but from their gut. The actual problem is going on inside your stomach, and your mouth is just the gateway for the foul stomach odors to be released.

If you’re trying to learn how to cure bad breath coming from stomach then you need to learn more about the different digestive problems that could be the culprit.

If you believe your bad breath problem is originating in your stomach you’re probably wondering why. One of the main reasons your stomach and digestive problems cause halitosis is because the bacteria inside your gut releases odors that travel upwards and through your mouth as it breaks down the food you consume.

Another way your stomach can cause chronic bad breath is when the food you eat isn’t getting digested properly. Undigested food in your gut will eventually convert into gas that gets released through your mouth as a stinky odor.

How to Fix Bad Breath From Stomach – First Learn The Cause

internal bad breath

If you want to learn how to cure bad breath coming from stomach you have to figure what’s causing the problem first. There are various stomach problems that could be the root cause of your bad breath.

Some of the digestive problems that are often associated with halitosis include:

H. Pylori

The main cause of chronic bad breath that comes from the stomach is H. pylori. The full name for H. pylori is Helicobacter pylori and it’s a type of bacteria that can live in your gut for years without you knowing until it begins to cause various stomach problems like peptic ulcers, stomach cancer, and lymphoma.

The most common way people get infected with H. pylori is from drinking unsanitary water. The bacteria can also enter your body if you eat contaminated food or if you come into contact with the saliva of a person who is already infected with it.

The main way that H. pylori causes bad breath is by decreasing your levels of stomach acid which will make it hard for you to digest food properly. When the foods you eat don’t get digested and remain in your stomach they convert into smelly gas that is released through your mouth.

You can read more about the link between halitosis and H. pylori here.

Functional Dyspepsia

Functional Dyspepsia or FD for short is a digestive condition that causes a lot of discomfort and pain in the upper digestive tract. Doctors still aren’t completely sure what causes this stomach condition but some speculate it is due to a bacterial infection.

Since excessive burping and vomiting are 2 of the main symptoms of this digestive problem it’s no wonder it can cause whoever is suffering from it to experience chronic bad breath.


Sometimes referred to as stomach paralysis, gastroparesis causes the transition of food from your stomach to your small intestines to be slowed down or completely come to a stop.

This inefficient emptying of food from your stomach to the intestine is what can cause persistent bad breath.

Gastrojejunocolic Fistula

This is a very rare disorder of the digestive system that develops as a result of the surgical procedure known as Billroth. Bad breath due to this gastrointestinal tract condition will often have a weird fruity smell to it.

Stomach Cancer

One of the main symptoms of stomach cancer is actually bad breath. As the cancerous cells grow in the stomach they release volatile organic compounds that come out through the mouth.

In fact, some doctors are now using a breath test in order to detect if a patient has or is developing early stages of stomach cancer. Some experts in the medical field actually believe the breath test is much simpler and accurate when it comes to detecting the existence and severity of gastric cancer compared to endoscopy.

The sensors that the breath test uses contain small nano-materials that pick up cancerous particles floating in exhaled air.


Stomach ulcers are sores that often develop around the esophagus, small intestine, or lining of the stomach. These sores can cause a lot of pain and produce a sour smelling gas odor in your gut that is often released from your mouth as a burp.

Most of the time ulcers are caused by the H. pylori bacteria and once the bacteria is treated the ulcers along with the foul gas odor it causes will be gone too.

GERD & Acid Reflux

There is no doubt that GERD and acid reflux an contribute to severe bad breath. One way people with GERD have bad breath problems is because the food they eat doesn’t get digested and releases a sour smelling odor through their mouth.

Another way GERD and acid reflux causes bad breath is by causing you to regurgitate the undigested food in your gut. As you can imagine the smell of old food being regurgitated into your mouth won’t increase your chances of having fresh breath all day long.

Acid reflux can also cause your breath to smell less than pleasant because it causes mucus build up in your throat and on your tongue. An excessive amount of mucus around your tongue and throat will create a perfect environment for odor causing bacteria to multiply rapidly in your mouth.

Check out this study on the association between GERD and chronic bad breath.

The Diagnosis

If you want to learn how to cure bad breath coming from stomach you need to figure out what digestive disorder is the actual cause. In order to find the root cause to your stomach bad breath you need to go to a doctor and get a professional diagnosis performed.

Some of the most common tests doctors will perform while they diagnose you include:

  • Blood Test – Checking samples of your blood to get a positive reading.
  • Stool Test – Checking samples of your stool to get a positive reading.
  • Breath Test – The doctor will give you a liquid to drink and then you’ll breath into a bag that the doctor will send to a lab for a closer look.
  • CT Scanning – This involves taking pictures of the inside of your body using X-ray technology.
  • Upper GI Test – You’ll be given a liquid to drink that will allow the doctor to see inside your throat and stomach much clearer so he or she can easily detect any signs of of a digestive problem.
  • Endoscopy – This testing method involves placing a tube with a tiny camera attached to it down your throat until it reaches inside your stomach and the upper area of your small intestine. The doctor will then be able to see bacteria if there is any.

Once the diagnosis is over the doctor will either test you positive or negative for one or more digestive problem.

How to Cure Bad Breath From Stomach

bad breath digestive system

Figuring out how to cure bad breath permanently will depend on what you got tested positive for during your diagnosis. If you test positive for any of the digestive disorders listed above the first line of treatment most doctors will recommend are antibiotics.

Antibiotic Therapy

Antibiotic therapy works by eliminating all bacteria in your stomach in order to restore the health of your digestive system. Even though killing all the bacteria in your gut will help get rid of the underlying stomach problem, it also means you’ll be getting rid of the good bacteria in your gut that’s beneficial to you too.

When you ask your doctor how to cure bad breath coming from stomach he or she will have various antibiotics for you to try and see if they help or not.

However, the antibiotic your doctor prescribes you to will depend on what digestive problem you tested positive for. Once the antibiotics begin working the underlying digestive problem will fade away, and your breath should begin smelling a whole lot better as a result.

Diet Modifications

One of the best things you can do to get rid of bad breath from your stomach is to make some simple adjustments in your diet.

For example, if your bad breath is due to GERD or acid reflux then changing the way you eat can have remarkable results when it comes to keeping your breath fresh.

Some simple things you can begin doing today include:

  • Not laying down right after you eat something.
  • Eating smaller portions of food at each meal instead of one huge meal.
  • Taking your time to chew and digest your food so that it has a better chance of getting digested properly.
  • Avoiding citrus fruits, sodas, fried food, alcoholic beverages, and other acidic food items that can actually make your condition worse. Undigested food leads to the over-production of stomach acid which causes more acid reflux episodes and more bad breath.

It’s important to point out that you shouldn’t only focus on avoiding certain foods that trigger your digestive bad breath symptoms. You should also try your best to eat more foods that will actually help cure your halitosis by improving the health of your digestive system.

Drinking more water on a daily basis is also a good idea because it will help increase the production of saliva in your mouth, which will help remove bad breath from stomach acid.

Also, you should eat foods rich in prebiotics and probiotics on a daily basis to improve your digestive health and get rid of bad breath from the stomach.


One of the best foods you can add to your daily diet in order to fight off stomach problems that are responsible for your halitosis are foods rich in prebiotic.

The reason why prebiotics are one of the best natural remedies for bad breath coming from stomach is because it’s a soluble fiber that helps get rid of stomach problems like acid reflux & GERD by strengthening the good bacteria in your digestive system. Prebiotics also help by acting as a natural intestinal cleanser that flushes out undigested food and bad bacteria from your gut.

Foods that are high in prebiotics include chicory root, onions, garlic, and bananas. Eat as much of these prebiotic rich foods as you can to improve the health of your digestive system and stop halitosis.

For a full list of the best prebiotic foods you can eat click here. Also, if you can’t seem to eat enough foods rich in prebiotics then try taking this super fiber in supplement form.


One of the best ways to cure bad breath by improving the health of your gut is to take probiotics on a daily basis.

Unlike antibiotics that kill the bad bacteria as well as the good bacteria in your gut, probiotics work by eliminating the bad bacteria in your stomach responsible for your halitosis while strengthening the beneficial bacteria.

Many dental professionals are actually beginning to move away from using antibiotics to treat halitosis coming from the stomach and focus more on the use of probiotics. You check out this in-depth study here which shows the efficiency of probiotics over the traditional use of antibiotics for treating bad breath.

Find a really good probiotic and take double or triple the dosage each day to experience less halitosis symptoms. The brands we like are RepHresh Pro-B, Culturelle Digestive Health Probiotic Chewables, and Align. However, don’t hesitate to try other probiotic brands until you find the one that works the best for you.

Always go for the probiotics with at least 50 billion live organisms each dosage to get the best results. The more you take these large dosages of probiotics daily the better your digestive system will begin to function, and the less foul odor you’ll experience coming from your mouth.

Other than daily supplements you can also get more probiotics into your gut by eating fermented foods. Fermented foods such as yogurt, pickles, kimchi, and sauerkraut have millions of the live active cultures that can improve your gut health. For the best results eat probiotic rich fermented foods at least 2 times each day.

For more fermented foods naturally high in probiotics that can benefit your digestive health and breath click here.

Prevent Bad Breath From Stomach

Now that you’ve learned how to cure bad breath coming from stomach by improving the health of your gut it’s time to learn how to prevent the unpleasant smell from returning. One of the best things you can do to prevent this problem from happening again is to stop eating the foods that could trigger your digestive disorder that was causing your bad breath.

If you know when you eat spicy foods you experience acid reflux then avoid eating anything that is too hot. If you notice your stomach gets a little unsettled when you consume dairy products then stop drinking that glass of milk every night before you go to sleep.

Another thing you should be doing is practicing good oral hygiene everyday. Things like brushing your teeth twice each day, flossing in between your teeth, and using a good mouthwash for chronic bad breath are mandatory if you want to prevent mouth odor.

Finally, make a habit of taking a probiotic supplement daily (even after your bad breath is gone) in order to give your stomach that extra help it needs when it comes to fighting off bacteria that could cause your digestive problem to return full force.

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