What causes bad breath?
Disease description:
Recently, my girlfriend always keeps a distance when talking to me, saying that I have bad breath, which has made me quite embarrassed. I just want to ask, what causes bad breath?
Doctor's answer (1)
Dr. Liu Chao
Bad breath, also known as halitosis, may be caused by various factors. The following are some primary causes:
1. Poor oral hygiene: Inadequate brushing and flossing can lead to accumulation of food debris in the mouth. Bacteria breaking down these residues produce foul-smelling gases.
2. Gastrointestinal diseases: Conditions such as gastric ulcers, gastritis, and peptic ulcers may also cause bad breath, as these diseases can affect gastrointestinal motility, leading to the accumulation and decay of waste in the gut, producing gases such as hydrogen sulfide.
3. Dry mouth: Saliva helps clean the mouth and inhibit the growth of bacteria that cause bad breath. Certain medications, salivary gland disorders, or persistent mouth breathing can cause dry mouth, thereby increasing the risk of halitosis.
4. Dietary habits: Eating strongly flavored foods such as garlic and onions can cause temporary bad breath, as their components are absorbed into the bloodstream and then exhaled through the lungs.
5. Smoking and alcohol consumption: Tobacco and alcohol not only directly produce unpleasant odors but also reduce saliva production and promote bacterial growth.
If bad breath is severe or does not improve over a prolonged period, it is advisable to seek medical attention promptly.
