Why The Vagus Nerve Is Suddenly Everywhere — And Why It Matters

In recent years, the vagus nerve has shifted from a niche anatomical term to a central concept in wellness, neuroscience, and even technology. You may have seen it linked to discussions on stress, digestion, sleep, trauma, or new wearable devices designed to influence the nervous system.

So, what is the vagus nerve, and why is it drawing so much attention?

The vagus nerve is the longest and most complex of the 12 cranial nerves. Its name comes from the Latin vagus, meaning “wandering,” because it extends from the brainstem all the way to the abdomen.

Function Of The Vagus Nerve

The vagus nerve function can be understood as a communication superhighway between the brain and the body’s organs. About 80% of its fibres carry sensory information from the organs to the brain, while the other 20% send motor commands from the brain to the organs.

Its main functions include:

• Heart Rate: Regulates and slows heart rate to maintain balance.
• Digestion: Stimulates stomach acid, digestive enzymes, and intestinal movement.
• Inflammation: Helps control the immune system’s inflammatory response.
• Stress & Calm: Influences the gut-brain axis, shaping stress response, mood, and a sense of ease.

A well-functioning vagus nerve is often associated with higher vagal tone. This means a more resilient nervous system, faster recovery from stress, and greater overall balance.

Improving vagal tone doesn’t require medical devices — many gentle, everyday practices can activate the vagus nerve and support nervous system balance:vorce often describe:

• Breathing Exercises: Slow diaphragmatic breathing, with longer exhales, is one of the most effective ways to stimulate the vagus nerve.
• Cold Cxposure: Brief cold showers, rinses, or splashing the face with cold water can activate the nerve.
• Humming, Singing, Chanting: Vibrations from the vocal cords stimulate vagal pathways in the throat.
• Laughter: Genuine belly laughter engages the diaphragm and supports vagus nerve activity.
• Meditation & Yoga: Combining breath with mindful movement helps calm the body and increase vagal tone.
• Exercise: Regular endurance or interval training has been shown to support vagal tone.
• Social connection: Positive relationships and community strengthen the body’s relaxation response.
• Massage: Gentle massage, especially of the neck and feet, can stimulate the vagus nerve and reduce stress.

Why The Vagus Nerve Matters For Wellness