The Gut-Brain Connection: How Microbes Might Be Influencing Your Mood

Have you ever had a "gut feeling" about something?

That might not just be a figure of speech - your gut could actually be talking to your brain. 

Let's look at the gut-brain axis and see how the brain and microbes in your gut connect. 

What is the Gut-Brain Axis?

The Gut-Brain Axis refers to the series of nerves, hormones, and immune signals, most notably the vagus nerve, that bridge the gut and the brain. But there is a surprising part: microorganisms in your gut can impact this communication and influence your health, mood, memory, and mental well-being. 

Figure A: The Gut-Brain Connection [Image courtesy: ChatGPT]

The Microbes Making Waves

There are small molecules called neurotransmitters that carry signals from neurons, onto muscles, or glands. Some of the gut bacteria produce these neurotransmitters, like:

• Serotonin (about 90% of it is made in the gut!)
• GABA helps calm your nervous system
• Dopamine is linked to reward and motivation

When you gut microbiome is healthy, it helps keep these chemicals balanced; but if it's not, anxiety, depression, or brain fog may occur. 

Can you eat your way to a happier mind?

Emerging research suggests that diet plays a major role in shaping your gut microbiome:

• Fermented foods such as yoghurt, kimchi, and kefir accentuate the growth of good bacteria 
• Fiber-rich food (such as vegetables, fruits, and whole grains) serves as prebiotics/food for the good bacteria
• Whereas, consumption of processed foods and high sugar content food can disrupt the gut microbiome

Still a Mystery, But an Exciting One

Although the story is not fully understood, scientists know this much; Your microbes do not just come along for the ride, they may even help guide the trip. 

Whenever you feel low or anxious, you could try to help your microbes as well. 

Want to learn some natural tips to enhance your gut health?

Stay tuned for my next post on "Probiotics vs Prebiotics: What is the difference and Why It Matters". 

Got a gut question? Drop it in the comments - I might feature it next!

                                                                                                                                  - The Microbe Maven