Why do people drool in their sleep?

Drooling while sleeping is a common phenomenon that occurs in many people.

While this is completely normal in most cases, in some cases it could be related to certain health issues or sleep habits.

Below we will look at the most common causes and when they might be a sign of something more serious.

Common causes of nighttime salivation

Muscle relaxation

During deep sleep, especially REM sleep, the muscles of the body relax, including those in the mouth and jaw. This can cause the mouth to open slightly and saliva to leak out instead of being swallowed, as happens when we are awake.

If you sleep on your stomach or on your side, the force of gravity favors the release of saliva more easily. On the other hand, people who sleep on their backs tend to swallow saliva more easily, which reduces salivation.

nasal congestion

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