What causes bitter taste in the mouth and nausea?

If you have a bitter taste in your mouth and feel nauseous, you should be careful, as it is likely that you have some disease that is causing these symptoms. Nausea may be a gastrointestinal disease, and bitter taste in the mouth may be an oral disease. Only by finding the root cause can timely treatment be provided.

1. Oral diseases: People with oral diseases such as caries, gingivitis, periodontitis, oral mucositis, tooth decay, and periodontal disease are prone to the growth of bacteria in their mouths, especially anaerobic bacteria, which decompose to produce sulfides, emit a corrupt smell, and cause bad breath.

2. Gastrointestinal diseases, such as peptic ulcer, chronic gastritis, functional dyspepsia, etc., may be accompanied by bad breath. Recently, we have also found that people infected with Helicobacter pylori, which causes many gastric diseases, have a significantly higher incidence of bad breath than those who are not infected. After the eradication of Helicobacter pylori, the symptoms of bad breath are significantly alleviated. The reason may be that Helicobacter pylori infection directly produces sulfides, causing bad breath.

3. People who smoke, drink alcohol, drink coffee, often eat spicy foods such as onions, garlic, leeks, or are addicted to stinky foods such as stinky tofu and stinky eggs are also prone to bad breath.

4. Dieting to lose weight, or being unable to eat due to illness, or the reduced salivary gland function of the elderly, or endocrine disorders in women during menstruation, which leads to reduced saliva secretion, is conducive to the growth of anaerobic bacteria, thus causing bad breath.

5. Bad breath in teenage girls: Some girls in puberty have ovarian insufficiency and low sex hormone levels. The resistance of oral tissue decreases, making it easy to be infected by bacteria and produce bad breath.