6 Reasons Why You Drool When You Sleep

There’s nothing quite like drooling in sleep, waking up in the middle of the night to find you have been snoozing away in a puddle of your own saliva.

Drooling in your sleep is something most people feel embarrassed to talk about. It is expected in babies, who do not yet have full control over their mouths or swallowing muscles. Known by the medical terms Sialorrhea or Hypersalivation, Drooling is defined as saliva that runs out of your mouth beyond the margin of your lip.

Drooling once in a while is common and can happen to anyone. However, excessive drooling can be due to a health condition. Drooling can occur with any condition that impairs neuromuscular control of the muscles around the mouth, leading to weak muscles around the mouth, which increases the production of saliva or impairs swallowing.

If you don’t like the sensation of waking up to a damp pillow, Here are 6 reasons why you drool when you sleep.

1. Sleep Position

While side and stomach sleeping may be the two most popular sleeping positions, they are also the most likely cause of drooling when you sleep. People who sleep on their  stomachs or sides  are less likely to swallow their saliva, and more likely to wake up in a pool of drool.  The reason for this is very logical; in these sleeping positions, your mouth is facing downwards. It’s the law of gravity.

If you sleep on your side, your mouth can relax to the point that it actually opens, allowing saliva to dribble out. Especially if you tend to breathe through your mouth, or if you have narrow sinus passages, the accumulated drool can begin to slip out from your lips when they open to breathe. But when you sleep on your back, you naturally swallow during sleep, which prevents drooling.

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