What is the cause of bad breath and mouth odor?

Patient's question:

Doctor, I have bad breath for more than ten years, and now I don't know what to do. What is bad breath?

Doctor's answer:

Halitosis refers to a condition characterized by foul-smelling exhalation from the mouth. It is often noticeable as a distinct odor during exhalation, which cannot be completely eliminated by brushing and rinsing the mouth, nor can it be masked by chewing gum or using mouthwashes. It is an internal, lingering foul smell.
The primary cause of halitosis is often due to irregular dietary habits, excessive consumption of spicy foods, or overexertion, which can lead to the weakening of the spleen and the deterioration of gastrointestinal function. This results in the inability to properly absorb food in the intestines, causing a large amount of undigested food to accumulate and gradually form toxins. These toxins then enter the intestinal wall and bloodstream, damaging internal organs and causing various diseases.

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