The vagus nerve is one of the longest and most complex nerves, running from the brainstem to various organs in the chest and abdominal cavities, such as the heart, lungs, and digestive system. It plays a crucial role in the parasympathetic nervous system, which is responsible for the body's rest and recovery; consequently, stimulating the vagus nerve can offer various health benefits.
Why stimulate the vagus nerve?
Some reasons to stimulate the vagus nerve include:
Stress reduction: The vagus nerve activates the parasympathetic nervous system, helping the body relax and reduce stress. This can lead to lower cortisol levels and an improved sense of well-being.
Improved digestion: Stimulating the vagus nerve can improve digestion, as the nerve promotes peristalsis (the contraction of intestinal muscles) and the production of digestive juices.
Lower heart rate and blood pressure: Vagus nerve stimulation can help lower heart rate and stabilize blood pressure, which is beneficial for people with cardiovascular disease.
Anti-inflammatory effects: Stimulating the vagus nerve can reduce inflammation in the body by regulating the immune system. This may help with chronic inflammatory conditions such as rheumatoid arthritis.
Improved mood and mental health: Vagus nerve stimulation is also linked to improved mood and reduced symptoms of anxiety and depression. This is because the nerve influences the release of neurotransmitters such as serotonin and dopamine.
In his book Versterk je nervus vagus (Strengthen Your Vagus Nerve), author and stress expert Luc Swinnen shares a wealth of practical tips for strengthening the vagus nerve and improving our overall well-being. Here are a few of them:
Deep breathing exercises
Deep breathing exercises, such as abdominal breathing, can activate the vagus nerve and promote relaxation. By breathing deeply on a regular basis, we signal to our body that it is safe and can reduce stress. The book mentions the 4-7-8 breathing technique, among others.
How does the 4-7-8 breathing technique work?
Inhale through your nose for 4 seconds.
Hold your breath for 7 seconds.
Exhale slowly through your mouth for 8 seconds, making a soft "whoosh" sound.
Repeat this pattern a few times; doing it four times in a row is often recommended, especially for beginners.
Meditation and mindfulness
Meditation and mindfulness exercises can help us live in the moment and reduce stress. These practices have also been shown to improve vagus nerve function and boost our resilience. The book explains several exercises—such as the body scan and autogenic training—in great detail. Single-pointed focus meditation, open monitoring meditation, and metta meditation are also covered.
How do you do a body scan?
Lie down or sit comfortably: Make sure you have a quiet, comfortable place where you won't be distracted. You can lie on your back with your arms by your sides or sit in a chair.
Close your eyes and focus on your breathing: Direct your attention to your breath and breathe calmly in and out. This helps you relax and settle into the present moment.
Start with your feet: Focus your attention on your toes, feet, and ankles. Notice how they feel—do you sense tension, warmth, or cold? Take the time to simply observe without judgment.
Slowly move up through the body: Gradually shift your attention to other parts of your body—your legs, knees, thighs, hips, lower back, chest, arms, hands, neck, and head. Pause for a few moments at each body part and notice what you feel.
Release tension: If you notice tension or discomfort in a specific part of your body, imagine releasing that tension with every exhale. If you don't feel any tension, simply observe the sensation without trying to change anything.
Finish with the whole body: After scanning each part of your body, bring your attention to your body as a whole. Feel your body present as a single unit and continue breathing calmly.
Physical activity
Regular physical activity, such as walking, jogging, or yoga, can stimulate the vagus nerve and benefit our health.
Social connection
Forming positive social relationships can stimulate the vagus nerve and contribute to our emotional well-being. Spending time with loved ones, hugging, and having positive interactions all have a beneficial effect on the health of our nervous system.
Healthy diet
Our diet can directly influence the health of the vagus nerve. Eating foods rich in omega-3 fatty acids, antioxidants, and fiber can support nerve function. Conversely, we should consume caffeine, alcohol, and sugar in moderation, as these substances can negatively affect the vagus nerve.
Sleep
A good night's sleep is essential for a healthy vagus nerve. During sleep, our body recovers and the vagus nerve is revitalized. It is therefore important to get sufficient, high-quality sleep.
Relaxation
Rest and recovery are essential for stimulating the vagus nerve. By regularly taking time for relaxation, hobbies, and self-care, we can improve our nervous system health and build resilience.
Positivity
Positive emotions, such as gratitude and joy, have a beneficial effect on the functioning of the vagus nerve. Maintaining a positive outlook on life can strengthen our nervous system health and promote our well-being. One of the tips Luc Swinnen offers in his book is to keep a gratitude journal or write a letter of gratitude to someone.
For more information on the polyvagal theory and practical tips, we recommend the book Versterk je nervus vagus by Luc Swinnen (published by Lannoo).
Sources:
www.webmd.com
www.ncbi.nlm.nih.gov
www.scientificamerican.com
auteur: Annemie Vandeweerdt, health journalist