What Causes Excessive Salivation?

Saliva is a familiar bodily fluid to everyone. Its primary component—salivary amylase—possesses certain antibacterial properties, and saliva also contains a hormone associated with maintaining a more youthful appearance. So, what causes excessive salivation?

What Causes Excessive Salivation?

When excessive salivation occurs, the first consideration should be possible indigestion. Consuming overly greasy foods or eating excessively at night may lead to increased salivary secretion during sleep, as saliva production is regulated according to the body’s physiological needs. Generally, salivary secretion gradually increases following meals.

The temperature and humidity inside the oral cavity provide an ideal environment for bacterial proliferation. Food debris or carbohydrates trapped between teeth can easily trigger dental caries and periodontal disease. These pathological conditions exert significant local irritation, potentially causing excessive salivation during sleep. If salivation exceeds normal physiological levels, it may indicate spleen-stomach deficiency—often attributable to recent irregular eating habits, consumption of raw or cold foods, or physical fatigue.

The above points outline common causes of excessive salivation. Patients whose symptoms stem from oral disease should consult a dentist to evaluate potential oral inflammation or anterior dental abnormalities. Alternatively, if excessive salivation results from central nervous system disorders, referral to a neurologist is warranted. Moreover, in daily life, individuals should strive to avoid tension and anxiety, maintaining emotional stability and mental calmness. We hope this information proves helpful.