Why Do My Mouth Feel Sour After Eating?

Oral odor not only affects oneself, but also affects others around. This is because the unpleasant odor can be smelled by others during daily communication. Some people may not be very aware of their own oral odor, but if there are other sweet or sour tastes in their mouths, they may feel it more clearly. This is also the reason why some people rinse their mouths after meals.

1. Oral diseases are the most common cause. Some people do not pay attention to oral hygiene, and their oral mucosa, teeth, and periodontal tissues may be infected by bacteria. A large number of anaerobic bacteria in the mouth decompose food residues and produce a large amount of sulfides, which emit a strong sour and rotten odor.

2. Teenage girls may experience sour taste in their mouths after eating. This is related to physiological functions. During puberty, the ovaries of girls are not fully developed, and their oral resistance to disease decreases. The mouth is susceptible to bacterial infection, and bacteria decompose oral residues to produce a large amount of sour-tasting substances.

3. Secretion dysfunction is another possible cause. This situation is more common in menopausal women and the elderly. Their endocrine function gradually decreases, and even endocrine disorders occur, indirectly leading to a reduction in saliva secretion. Saliva is crucial for maintaining oral cleanliness and hygiene. If saliva secretion is low, anaerobic bacteria are more likely to grow, and these bacteria will decompose food residues and produce a sour odor.

4. Smoking, drinking, drinking coffee, eating scallions, leeks, and other foods can often leave a strange taste in the mouth. Some people also like to eat at roadside stalls. However, due to poor hygiene and the use of spoiled or deteriorated ingredients, these foods may emit a sour taste.