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The Power of the Vagus Nerve

The Power of the Vagus Nerve

We've seen a lot of chatter online about the vagus nerve recently, so we thought we'd simplify the key points for you...

So, what is the Vagus Nerve?

The vagal nerves are a key component of the body's nervous system. They carry signals from the brain to the rest of the body, controlling many vital motor and sensory functions, including digestion, heart rate, immune system responses, and mood. 

They are part of the parasympathetic nervous system, which controls the "rest and digest" functions, as opposed to the sympathetic nervous system, which controls the "fight or flight" functions. The two systems regulate the body's involuntary movements.

The Vagus Nerve and gut health

Neurons are cells found in your brain and central nervous system that control your body functions. The gut contains over 500 million neurons that are connected to the brain via nerves in the nervous system, the largest of which being the vagus nerve, which carries signals in both directions.

Alteration of the gut microbiota can lead to inflammatory responses in the gut, which results in these signals being sent through the vagus nerve to the brain. This can induce a stress response in the brain and disrupt the normal of the involuntary functions regulated by the parasympathetic nervous system (e.g. digestion, mood, heart rate).

Why should you care?

A disrupted vagus nerve can show in different ways, but the most common symptoms include abdominal pain, bloating, acid reflux, dizziness, loss of appetite, and changes in heart rate.

The vagus nerve also links the brain's emotional centres with the skin, affecting its microbiota composition and barrier functions. If the vagus nerve is overstimulated and unable to send the correct "rest and digest" signals, you may experience inflamed, dry, uneven skin and be more at risk of breakouts.

How to calm the Vagus Nerve

There are a few ways you can easily calm the vagus nerve at home:

  • Practice 4-7-8 breathing (https://www.medicalnewstoday.com/articles/324417)

  • Sing more often (https://www.musichealth.ai/blog/music-and-the-vagus-nerve#:~:text=The%20larynx%2C%20or%20voice%20box,and%20you%20feel%20more%20relaxed.)

  • Laugh - this stimulates the vagus nerve while lowering blood pressure and boosting mood

  • Cold water immersion (https://icebarrel.com/white-paper/#:~:text=The%20bottom%20line%20is%20that,and%20feelings%20of%20well%2Dbeing.)

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