Halitosis is a very common phenomenon in real life, especially when talking to others, it will make others feel very uncomfortable. Although there is a little unpleasant odor, it doesn’t matter, but if When bad breath becomes severe, people will feel that this person is not approachable. Bad breath can indicate symptoms of liver, lung, kidney, and stomach diseases.

Corruption smell - upper respiratory tract disease. Upper respiratory tract diseases such as sinusitis, tonsillitis and pharyngitis will secrete a large amount of protein-containing mucus, part of which forms nasal mucus, and the rest flows from the nasal passages into the oropharynx. This mucus partially adheres to the back of the tongue or the oropharynx, and when the protein is broken down, it produces a putrid smell.

Sour smell - stomach disease. When gastric pyloric stenosis or obstruction occurs, food left in the stomach for too long will produce a sour and putrid smell, which will be emitted through the mouth. Stomach diseases such as reflux esophagitis can also lead to pathological bad breath. Vomitus adhering to the mouth and throat continuously releases "acid gas". Bad breath usually improves significantly with aggressive treatment of gastric problems.

Rotten apple smell - diabetic pyruvate poisoning. When a person's blood sugar exceeds the standard and is not controlled, the fat in the body will decompose and produce ketone bodies. The α-ketoglutarate in it will give off a sour rotten apple taste. When this smell is exhaled, the ketone body concentration in the patient's body is already very high, approaching or reaching the level of diabetic ketoacidosis. He needs to seek medical treatment in time, otherwise his life will be in danger.

Smell of excrement - liver failure. When liver failure occurs, the liver's metabolic capacity weakens and its ability to decompose toxins decreases, leading to an increase in blood ammonia and a slightly sweet smell of excrement in the mouth, also known as the "breath of death." The body's ability to metabolize certain branched-chain amino acids is weakened, which can also lead to a rotten apple smell.

Rotten smell - lung cancer. Lung infection, bronchitis, lung abscess, chronic tracheitis, pneumonia, emphysema and even lung cancer can all cause varying degrees of bad breath. These odors are often caused by mucus that accumulates in the lungs. Among them, patients with lung abscess are often accompanied by acidic halitosis. Such patients often have fever, purulent sputum, etc., and chest X-ray examination can generally confirm the diagnosis; patients with pulmonary tuberculosis and hemoptysis with bronchiectasis often have blood-smelling halitosis; patients with advanced lung cancer often have oral odor. and a putrid odor appears in the breath.

It can be seen that in addition to noticing mouth sores, tooth decay and gastrointestinal indigestion, bad breath can also be caused