The benefits of vagus nerve stimulation (other than relaxing the body, mind, and soul – and really, isn’t that enough of a reason?):
- It reduces the inflammatory response throughout our system.
- It helps the brain emit new cells.
- It decreases depression and anxiety and lifts our mood. Forty million Americans are affected by mood disorders. Enough said!
- It assists in developing razor-sharp memory, and there are so many applications for increased memory capacity in our culture like Alzheimer’s work, traumatic brain injuries, and plain-and-simple everyday life.
- It raises your immunity. How about staying healthy and taking vacations to beautiful faraway places instead of lying on the couch suffering through yet another bout of bronchitis?
- It raises the level of endorphins, which bring about positive feelings in the body and reduce the sensation of pain.
Have you ever seen the list “100 Benefits of Meditation“? Of course, many of these benefits are psychological. You know, things like: helps control own thoughts (#39) and helps with focus & concentration (#40). But many of the 100 benefits are rather physical, bodily, physiological, immunological and even biochemical benefits (such as #16- reduction of free radicals, less tissue damage).
These are awesome claims, and I’ve certainly found that mediation helps me feel more emotionally balanced and physically relaxed, but I’m wondering – from a hard science point of view – how legit some of these claims might be. For example, “#12 Enhances the immune system“ – REALLY? How might yoga and mediation enhance my immune system?
In a previous post on the amazing vagus nerve – the only nerve in your body that, like the ancient Kundalini serpent, rises from the root of your gut to the brain – AND – a nerve that is a key to the cure of treatment resistant depression– it was suggested that much of the alleviation of suffering that comes from yoga comes from the stimulation of this amazing nerve during postures and breathing.
Somehow, the ancient yogis really got it right when they came up with the notion of Kundalini serpent – so strange, but so cool!
I happened to stumble on a paper that explored the possibility that the vagus nerve might also play a role in mediating communication of the immune system and the brain – and thus provide a mechanism for “#12- Enhances the immune system” Here’s a quote from the article entitled, “Neural concomitants of immunity—Focus on the vagus nerve” [doi:10.1016/j.neuroimage.2009.05.058] by Drs. Julian F. Thayer and Esther M. Sternberg (Ohio State University and National Institute of Mental Health).
By the nature of its “wandering” route through the body the vagus nerve may be uniquely structured to provide an effective early warning system for the detection of pathogens as well as a source of negative feedback to the immune system after the pathogens have been cleared. … Taken together these parasympathetic pathways form what has been termed “the cholinergic anti-inflammatory pathway”
The scientists then investigate the evidence and possible mechanisms by which the vagus nerve sends immunological signals from the body to the brain and also back out to the immune system. Its not a topic that is well understood, but the article describes several lines of evidence implicating the vagus nerve in immunological health.
So bend, twist, inhale and exhale deeply. Stimulate your vagus nerve and, as cold and flu season arrives, awaken the serpent within!
Tips to stimulate the vagus nerve
- Humming: The vagus nerve passes through by the vocal cords and the inner ear and the vibrations of humming is a free and easy way to influence your nervous system states. Simply pick your favorite tune and you’re ready to go. Or if yoga fits your lifestyle you can “OM” your way to wellbeing. Notice and enjoy the sensations in your chest, throat, and head.
- Conscious Breathing: The breath is one of the fastest ways to influence our nervous system states. The aim is to move the belly and diaphragm with the breath and to slow down your breathing. Vagus nerve stimulation occurs when the breath is slowed from our typical 10-14 breaths per minute to 5-7 breaths per minute. You can achieve this by counting the inhalation to 5, hold briefly, and exhale to a count of 10. You can further stimulate the vagus nerve by creating a slight constriction at the back of the throat and creating an “hhh”. Breathe like you are trying to fog a mirror to create the feeling in the throat but inhale and exhale out of the nose sound (in yoga this is called Ujjayi pranayam).
- Valsalva Maneuver: This complicated name refers to a process of attempting to exhale against a closed airway. You can do this by keeping your mouth closed and pinching your nose while trying to breathe out. This increases the pressure inside of your chest cavity increasing vagal tone.
- Diving Reflex: Considered a first rate vagus nerve stimulation technique, splashing cold water on your face from your lips to your scalp line stimulates the diving reflex. You can also achieve the nervous system cooling effects by placing ice cubes in a ziplock and holding the ice against your face and a brief hold of your breath. The diving reflex slows your heart rate, increases blood flow to your brain, reduces anger and relaxes your body. An additional technique that stimulates the diving reflex is to submerge your tongue in liquid. Drink and hold lukewarm water in your mouth sensing the water with your tongue.
- Connection: Reach out for relationship. Healthy connections to others, whether this occurs in person, over the phone, or even via texts or social media in our modern world, can initiate regulation of our body and mind. Relationships can evoke the spirit of playfulness and creativity or can relax us into a trusting bond into another. Perhaps you engage in a lighthearted texting exchange with a friend. If you are in proximity with another you can try relationship expert, David Snarch’s simple, yet powerful exercise called “hugging until relaxed.” The instructions are to simply “stand on your own two feet, place your arms around your partner, focus on yourself, and to quiet yourself down, way down.”
Because of the pathway of the vagus nerve, long deep breathing is the number one key to activating the vagus nerve. Breathing can be involuntary (something the vagus nerve does for us when we aren’t paying attention), but it can also be something we do consciously. By bringing awareness to the breath, lengthening and deepening it, you turn on the vagus nerve, giving your body the opportunity to rejuvenate.
So, let’s stop and breathe with awareness for ten minutes:
As you inhale, lift your collarbone.
As you exhale, soften and relax.
As you inhale, expand your ribs out under your arms.
As you exhale, soften and relax.
As you inhale, expand your ribs across your back
As you exhale, soften and relax.
When you sit, close your eyes, and utilize your system’s own action, you enhance your health and wellness.
Here are a number of pathways to the vagus nerve. Choose your favorite:
- Immerse your face (especially the forehead, eyes, and two-thirds of your cheeks) in cold water for three minutes.
- Practice restorative yoga and include gentle backbends, forward bends, and twists.
- Include inversions in your practice like downward dog or legs up the wall.
- Chant and sing in low resonant tones.
- Immerse your tongue in saliva while doing long deep breathing.
- Practice Qigong.
- Laugh with deep diaphragmatic laughs.