It is a very common idea: bad breath comes from the stomach. In reality, this is true only in a small minority of cases, while the reality related to the mouth is much more common.
Why this myth persists: The esophagus normally functions as a one-way valve, so odors from digestion rarely travel back up to the mouth under normal conditions. True bad breath of gastric origin is linked primarily to specific conditions such as gastroesophageal reflux disease (GERD) or, rarely, certain digestive infections — not to daily digestion.
What is usually actually happening: In most cases where someone blames the stomach, the real cause is standard oral bacteria — often worsened by something in the diet that is mistakenly associated with stomach problems, such as garlic, dairy, or spicy foods, when in reality it is the breakdown of that food by bacteria in the mouth that causes the odor.
The role of Frelopop: Since most "stomach breath" is actually the work of oral bacteria, intervening in the mouth — where the odor is truly produced — tends to be much more effective than simply eliminating foods from the diet. A probiotic spray like Frelopop acts directly at the source.
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