4. Oral Diseases

Conditions such as gingivitis, periodontitis, or general poor oral hygiene can increase the presence of harmful bacteria in the mouth. These bacteria can multiply overnight, leading to inflammation and dryness.

Regular brushing, flossing, and dental checkups are essential in preventing oral infections that may cause dry mouth.

5. Diabetes
People with diabetes often experience dry mouth, especially at night. High blood sugar levels cause the kidneys to work harder to eliminate excess sugar through urine, which leads to fluid loss and dehydration.

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As a result, the mouth may feel unusually dry while sleeping.

6. Bile Reflux
When bile flows back into the stomach due to poor liver function, it can cause indigestion and disrupt sleep.

Bile reflux may lead to a dry mouth during the night and other digestive discomforts. Managing liver health is important in addressing this condition.

7. Fever

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