Gut Mind Connection - How Gut Health & Mood Are Linked

Your gut microbiome, a vibrant community of bacteria essential for overall health, plays a powerful role in supporting mood and emotions. Learn about the gut-brain axis and how your gut health and mental health are closely linked.
Learn about the link between gut health and mood
What’s the link between gut health and mood?
Have you ever felt butterflies in your stomach when something exciting happens, or when you have a “gut feeling”? It’s something you can feel physically and not just mentally. This is because of the gut mind connection, constantly sending signals to each other through the vagus nerve.A healthy gut helps keep your brain in balance, while an unhealthy gut can contribute to stress, anxiety, and depression through the gut-brain axis. An imbalance in gut bacteria can lead to inflammation, increasing the risk of affecting your mental health. That’s why understanding the gut and brain connection is key, along with maintaining a balanced diet containing fermented foods like Biotiful Kefir for managing anxiety and stress.

How does Kefir help to improve mental health and gut health?

Kefir and mental health are also linked, as consuming fermented products like Kefir supports gut health, which is linked to improved mental well-being. Our Biotiful Kefir yogurts and drinks are packed with billions of live cultures to help create diversity within your gut-brain connection. We believe a happy gut is the foundation of a happy mind. 

A balanced microbiome helps your body produce feel-good hormones like serotonin, manage stress more effectively, and elevate your overall sense of well-being. A brighter mood starts with a healthier gut thanks to the gut-brain axis, which you can achieve with Biotiful Kefir. 

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What is the ideal gut health diet to improve mood?

By thoughtfully selecting these nutritious foods, you can naturally support your gut health and enhance your overall mental health.

  • Consume Probiotic-Rich Foods: Incorporate fermented foods like Biotiful Kefir drinks and yogurts, sauerkraut, kimchi, miso, tofu, tempeh, and kombucha into your diet to help support the gut-brain axis. These foods are rich in probiotics and billions of live cultures, with Kefir helping to maintain a healthy and diverse gut microbiome, supporting your mental health.
  • Increase Fiber Intake: A diet high in fibre supports gut health by promoting the growth of beneficial bacteria. Foods high in fibre include fruits, vegetables, legumes, and wholegrains. It is suggested that we aim for 30 grams of fibre daily, and most of us are only reaching half this amount.
  • Stay Hydrated: Drinking plenty of water is essential for maintaining a healthy digestive system and supporting the growth of beneficial gut bacteria to support the gut mind connection.
  • Limit Processed Foods and Sugars: Processed foods and sugars can disrupt the balance of the gut microbiome, therefore impacting your gut health and mood.
  • Exercise Regularly: Physical activity, such as walking, yoga, or strength training, improves gut bacteria diversity, reduces stress, and enchances mood.
  • Get Natural Light:Sunlight helps regulate your circadian rhythm, supports vitamin D production, which can improve your mood, gut health and energy levels.
  • FAQs about mood and gut health

    Get the answers to some of the most frequently asked questions about mood and gut health!

    What is the gut-brain axis?

    Growing evidence suggests a strong link between gut health and mental health, as a result of the gut-brain axis. Conditions like anxiety often coincide with gut issues like IBS, and gut bacteria may influence anxiety and depression symptoms.

    In your gut, serotonin contributes to various functions, including digestion. The serotonin changes in your gut may also send signals to your brain, influencing neurotransmitter production. In the brain, serotonin plays a key role in regulating mood and sleep, which is why the gut mind connection is so strong. Additionally, gut bacteria produce GABA, a neurotransmitter that helps alleviate stress, anxiety, and fear. Animal studies suggest that enhancing “good” gut bacteria with probiotics can boost GABA production.

    Therefore, maintaining gut health through a balanced diet rich in fibre, natural protein sources and fermented foods like Kefir, regular exercise, and stress management is crucial for supporting mental health and wellbeing. At Biotiful, we’re committed to helping you support your mental health through our Kefir, which is naturally rich in beneficial bacteria.

    Are there studies that support the link between gut health and mental health?

    Researchers have identified specific gut microbes associated with mental health. One study found that people with depression had lower levels of Dialister and Coprococcus bacteria, which correlated with lower quality-of-life scores. Fecal microbiota transplants (FMT) are being explored as a potential treatment. Transferring gut bacteria from healthy donors has temporarily improved depression and anxiety symptoms in some studies, though effects often fade over time. 

    Another fascinating study on the gut mind connection conducted by John Cryan at the University of Cork found that in a germ-free environment, where there are no microbes, the brain does not develop normally. We need our microbes for our gut health and mental health. They can even produce neurotransmitters like GABA (to help calm us), serotonin (our feel-good hormone), and dopamine (for pleasure, satisfaction and motivation), which is why our gut and brain are so closely connected.

    Thankfully, there’s so much we can do to support our gut-brain connection, improve mood, and reduce feelings of stress and anxiety. One of my favourite studies demonstrating this is called the Psychobiotic Diet. It is incredibly empowering, showing how much we can do to support gut health, mental health and good mood.

    Why is the gut referred to as the second brain?

    We often refer to the gut as our second brain because the gut and brain are derived from the same foetal tissue, which is why there is such a strong connection. One part becomes the central nervous system, and the other part becomes the enteric nervous system—the gut. The enteric nervous system is the network of nerves that spans your entire digestive tract, from your mouth all the way to your anus. As the foetus develops, this tissue separates but remains connected by our 10th cranial nerve, called the vagus nerve. Our mood and gut health are so heavily intertwined for this very reason, so look after your gut health, and you’re also caring for your mental health, mind and mood.

    How can I improve my mental health to support my gut health?

    Just as much as your diet can impact your brain, your mental health can impact your gut health. If you’re stressed, anxious or don’t get enough sleep, then it can disrupt the balance of bacteria in your gut, which then has a knock on effect on your overall health and wellbeing. 


    So, looking after yourself mentally is just as important as fuelling your gut physically, to maintain a healthy gut and brain connection. Stress-reducing activities like walking, running, dancing, going to the gym or yoga can all help to improve your mental wellbeing, along with making time for relaxing activities you enjoy, whether it be painting, spending time outside, catching up with friends and family or cooking. 

    Getting enough sleep is also essential for your mental health, as improved sleep quality helps to regulate your sleep-wake cycle, so aiming for 7-8 hours of sleep per night, and prioritising winding down for an hour before bed rather than watching TV or using your phone, is really important for the gut and brain connection. Sleep can also significantly impact gut health, as if you aren’t getting enough sleep, it can cause disruption to hormone regulation, shift the composition of the gut microbiome and it can lower melatonin which is needed for gastrointestinal motility. 

    When your brain is healthy and your mental health is better, your gut health will thank you for it!

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