What is the Skin-Gut-Brain Axis?

Have you ever had a "gut feeling" about something? Or perhaps you've experienced butterflies in your stomach before a nerve-wracking event? Like everything in life, it's all connected. When I developed hormonal acne, I never thought it could be caused by years of restriction and under eating. My acne was how my mind, body and spirit tried to communicate with me. This manifested through my nervous system (being constantly stressed), my endocrine system (hormonal imbalance) and my immune system (continually being run down, ulcers in my mouth and sick constantly), letting me know that my lifestyle was NOT working for me. To unpack my skin, I had to unpack my mind, stressors and traumas. 


The skin-gut-brain axis is a dynamic network that links the gut, which houses our digestive system, with the brain, the command centre of our thoughts, emotions, and behaviours. This remarkable connection isn't just a one-way street; it's a two-way communication highway that constantly exchanges information between your intestines and brain, influencing everything from your mood, skin and mental health to your digestion and overall healing ability. I'll be spilling the tea on the surprising ways our lifestyle choices, diet, and even our environment can influence this axis and, in turn, impact our skin.


Let's get into the science:


The Vagus Nerve: A Bidirectional Communication Highway

The vagus nerve is no ordinary nerve; it's a critical part of the body's intricate communication network. From its role in regulating our immune system to its impact on our daily decision-making processes, it serves as a two-way street, carrying sensory information from the brain to internal organs and vice versa. This bidirectional flow of information explains why we often refer to "gut instincts" or intuition. When your brain sends signals via the vagus nerve, your gut responds, sometimes even triggering a fear response. It can look like bloating, constipation or lack of hunger. 



What does a Nervous System do?

The nervous system is divided into two main branches: the sympathetic and the parasympathetic. The sympathetic system triggers the "fight or flight" response when a threat is perceived, releasing chemicals like adrenaline. In contrast, the parasympathetic system engages the "rest and digest" mode, lowering blood pressure and heart rate. The vagus nerve plays a crucial role in balancing these two systems and determining whether a situation is perceived as dangerous or safe. Stephan Porges' Polyvagal Theory sheds light on the vagus nerve's role in reading social cues and threats. This theory explains how your body processes environmental signals to determine who you trust and feel safe with—a process known as "neuroception." Your vagus nerve is a central player in this complex system, influencing your perceptions and reactions in social situations.



The Gut's Influence on Mood and Stress

Your gut is more than just a digestive organ; it's a key player in your emotional well-being. In fact, it produces a staggering 90% of serotonin and 50% of dopamine, two neurotransmitters crucial for regulating mood and stress. Your gut's microbiome supports the production of these neurotransmitters, underscoring the importance of maintaining a healthy gut for emotional balance. That's why we must feed our gut with nutritious and fermented foods to help it thrive! 



How to have a good Skin-Gut-Brain Axis? Develop your Vagal Tone

 Developing a healthy vagal tone is a valuable strategy for healing, especially when dealing with trauma, stress, or chronic health conditions. A robust vagal tone makes you less sensitized to environmental threats, allowing you to bounce back from challenging situations quickly. Now let's get into the best bio-hacks for keeping an excellent vagal tone:

  • Sound Stimulation: Singing, chanting, laughing, or humming can enhance your mood, relaxation, and focus. Your vagus nerve connects with your vocal cords, and the sound produced stimulates the nerve, ultimately increasing your vagal tone. A higher vagal tone is associated with better emotional and physical resilience.
  • Cold Exposure: Exposing yourself to cold, such as taking a cold shower, plunging into cold water, or briefly stepping outside in a t-shirt, triggers a response in your autonomic nervous system. It reduces the activity of the sympathetic nervous system (responsible for "fight or flight") and increases the parasympathetic nervous system (associated with "rest and digest"). This shift can help lower stress levels and promote relaxation.
  • Gargling or Gagging: Gargling or inducing a gag reflex until your eyes water may seem unconventional, but it contracts the muscles at the back of your throat, stimulating the vagus nerve. This stimulation can activate the parasympathetic nervous system, fostering a state of calm and well-being.
  • Breathing and Mindfulness: Deep breathing, mindfulness, and meditation have well-documented benefits for reducing heart rate and blood pressure. They also aid digestion and activate the parasympathetic nervous system, promoting relaxation and stress reduction.
  • Physical Activity: Engaging in any form of physical activity that elevates your heart rate, such as walking, jogging, or dancing, can positively impact your vagal tone. Exercise not only improves physical fitness but also supports emotional well-being.
  • Cultivating Positive Emotions: Electing positive emotions through practices like affirmations and gratitude exercises can boost your vagal tone. Activities like spending time with pets, immersing yourself in nature therapy (forest bathing), or simply appreciating beautiful things in your surroundings can have a similar effect. Shifting your mindset towards positivity and gratitude can help reduce the impact of stress on your nervous system.

All of these practices create a conducive environment for healing by promoting a healthier vagal tone. By incorporating these activities into your daily routine, you can enhance your overall well-being and resilience to stress, ultimately creating space for personal growth and healing.

Want to chat about any more tips and how to decrease feelings of stress, reduce feelings of anxiety and generally improve your quality of your skin and life? Just get in touchI’d love to hear from you. 

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