The Vagus Nerve and Gut-Brain Axis Connection and How it Impacts Mental Health

The human body is comprised of elements, cells, organs, skin, blood and more and each component has a critical role in the body’s function. As time goes on, researchers and scientists can better understand the importance of these bodily components and the ways in which they impact one another and one’s overall health. 

New research highlights the role of the vagus nerve, which is located at the base of the brain and runs through the face and throat to the abdomen. Studies suggest that this key nerve is responsible for “regulation of internal organ functions” (Breit, Kupferberg, Rogler, Hasler, Frontiers). It can also impact stress levels, digestion and more because of its ability to send neurons, or messages, to both the brain and the gut. The communication system between these two parts of the body is referred to as the gut-brain axis (Robertson, Healthline). 

The gut-brain axis is also connected by chemicals known as neurotransmitters. Serotonin, histamine and dopamine are just three examples of neurotransmitters that are produced in the brain. Chemicals produced in this part of the body are responsible for feelings and emotions. Equally as noteworthy, neurotransmitters are also produced by gut cells, which controls feelings of fear and anxiety too (Robertson, Healthline). 

According to a review on nutritional psychiatry, researchers suggest that “there is growing evidence that nutritional components, such as probiotics, gluten, as well as drugs, such as anti-oxidative agents and antibiotics have a high impact on vagus nerve activity through the interaction with the gut microbiota.” 

With that being said, the connection between the gut-brain axis and diet supports the idea that diet has an impact on one’s gut health. Therefore, because of the physical and chemical connection between the gut and the brain, diet can also impact the brain, including symptoms of mental health conditions such as anxiety and depression. According to Healthline, “A number of foods such as oily fish, fermented foods, probiotics and high-fiber foods may help increase the beneficial bacteria in your gut and improve brain health.”

In conclusion, studies suggest that the role of the vagus nerve and gut-brain axis plays a part in one’s overall health. By eating a diet high in fiber, fermented foods, grains, fruits and vegetables, you may not only be supporting a healthy gut, but also see a decrease in depression and anxiety symptoms because of the gut’s connection to the brain. With a larger focus on mental health as it pertains to one’s overall well-being, it seems that nurturing the vagus nerve would be beneficial for the entire body.

Citations

Breit, S., Kupferberg, A., Rogler, G., & Hasler, G. (2018, February 1). Vagus nerve as modulator of the brain–gut axis in psychiatric and inflammatory disorders. Frontiers. Retrieved January 18, 2023, from https://www.frontiersin.org/articles/10.3389/fpsyt.2018.00044/full 

Robertson, R. (2017, June 27). Why the Gut Microbiome is Crucial for Your Health. Healthline. Retrieved January 18, 2023, from https://www.healthline.com/nutrition/gut-microbiome-and-health

https://bgapc.com/9-ways-to-improve-your-gut-health/