What causes the airway to close during sleep?

There are several reasons why this would occur.

The upper airway could become blocked due to:

  • The muscles around your airway relaxing too much during sleep, which blocks sufficient air from getting through. This narrow airway causes a vibration in your throat, which creates the sound of snoring.
  • The weight of your neck narrowing the airway
  • Inflamed tonsils, or other temporary reasons
  • Structural reasons, like the shape of your nose, neck or jaw

Read more about Obstructive Sleep Apnea (OSA) here.