We all have heard of the phrase “gut feeling”. Well, it turns out that our digestive system, commonly known as our “tummy,” may have more to do with our brain than we ever thought. Recent studies have shown that the gut contains a complex network of neurons that can communicate with the brain and affect our mood, behaviour, and overall well-being. In this article, we will explore the concept of the gut-brain axis and how our tummy may indeed be our second brain.

What is the Gut-Brain Axis?

The gut-brain axis refers to the bidirectional communication between our gut and our brain. This communication is facilitated by the enteric nervous system (ENS), which is a complex network of neurons that lines our digestive system. The ENS can operate independently of the brain, which is why it is often referred to as our “second brain.” However, the ENS can also communicate with the brain via the vagus nerve, a long nerve that connects the gut and the brainstem.

How Does the Gut Affect Our Mood?

Have you ever experienced “butterflies in your stomach” when you’re nervous or anxious? That’s the gut-brain axis at work. The ENS can produce neurotransmitters such as serotonin, dopamine, and GABA, which are also produced in the brain and are known to affect our mood. In fact, 95% of our body’s serotonin is produced in the gut. This means that the health of our gut can have a significant impact on our mental health and well-being.

There is also growing evidence to suggest that certain gut bacteria can affect our mood and behaviour. Studies have shown that people with depression and anxiety often have an imbalance of gut bacteria. Conversely, when these people take probiotics or make dietary changes to improve their gut health, their symptoms may improve.

How Does Diet Affect Our Gut-Brain Axis?

The food we eat can have a significant impact on the health of our gut and the function of the gut-brain axis. A diet high in processed foods, sugar, and unhealthy fats can lead to inflammation in the gut and disrupt the balance of gut bacteria. On the other hand, a diet rich in fibre, prebiotics, and probiotics can promote the growth of healthy gut bacteria and improve gut health.

Foods that are particularly beneficial for gut health include fermented foods like yogurt, kefir, and sauerkraut, as well as prebiotic-rich foods like onions, garlic, and asparagus. Probiotic supplements can also be beneficial for improving gut health.

It’s clear that our tummy is more than just a digestive organ – it plays a crucial role in our overall health and well-being. By taking care of our gut, we can improve our mood, behaviour, and overall quality of life. Eating a healthy diet rich in fibre, prebiotics, and probiotics can go a long way in promoting a healthy gut-brain axis. So the next time you have a gut feeling, trust it – your second brain may be trying to tell you something important.

Explore healthy snacks to heal your gut   here