Article
The Gut-Brain Axis: How Your Microbiome Affects Mental Health
Explore the science behind the gut-brain connection and how gut bacteria influence mood and cognition.
9 min readRead article
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Anxiety, Mood & the Gut-Brain Connection
Stress, Anxiety, Mood Swings & Sleep Issues
Scientists call the gut the ‘second brain’ — and for good reason. If you’re struggling with anxiety, low mood, or sleep issues, your gut microbiome may be at the centre of it. As a gut health specialist, Elena Rolt uses the latest research on the gut-brain axis to help restore mental wellbeing through functional medicine.
The Gut Connection
The gut-anxiety, mood & the gut-brain connection connection: a functional medicine perspective
Around 95% of your body's serotonin — the 'feel-good' neurotransmitter — is produced in the gut. Your gut bacteria also produce GABA, dopamine, and other chemicals that directly influence mood and anxiety levels. When the gut microbiome is imbalanced, or when there's inflammation in the gut, these neurotransmitter pathways can be disrupted, leading to mood changes, anxiety, and sleep problems.
Common Symptoms
Do any of these sound familiar?
- Persistent anxiety or worry
- Low mood or depression
- Mood swings
- Difficulty falling or staying asleep
- Irritability
- Feeling overwhelmed easily
- Racing thoughts
- Loss of motivation or interest
Potential Root Causes
What might be driving your symptoms:
- 1Gut dysbiosis affecting neurotransmitter production
- 2Inflammation triggering brain inflammation
- 3Blood sugar imbalances
- 4Nutrient deficiencies (B vitamins, magnesium, zinc)
- 5Hormonal imbalances
- 6Chronic stress depleting gut bacteria
- 7Leaky gut allowing toxins to affect the brain
- 8Poor vagal nerve function
Our Approach
How a gut health practitioner can help
We take a root-cause functional medicine approach to anxiety, mood & the gut-brain connection, using advanced gut microbiome testing and personalised nutritional therapy protocols.
01
Gut-Brain Assessment
We evaluate how your gut health is impacting your mental wellbeing through comprehensive testing.
02
Neurotransmitter Support
We use targeted nutrition and supplements to support healthy neurotransmitter production in the gut.
03
Stress Resilience Protocol
We address the gut-stress connection to help your body better cope with life's demands.
Client Story
"I never connected my anxiety to my gut until Elena explained the science. Healing my gut has done more for my mental health than anything else I've tried."
— James T.
Common Questions
Frequently asked questions about anxiety, mood & the gut-brain connection and gut health
Can gut bacteria cause anxiety and depression?+
Yes. Around 90% of serotonin (your 'happy hormone') is produced in the gut. Research shows that specific gut bacteria directly influence neurotransmitter production, inflammation levels, and the vagus nerve — all of which affect mood and anxiety. Rebalancing the gut microbiome can significantly improve mental wellbeing.
What is the gut-brain connection?+
The gut-brain axis is a bidirectional communication system between your gut and brain, connected via the vagus nerve, neurotransmitters, and immune signalling. When gut bacteria are imbalanced, they can send inflammatory signals to the brain, contributing to anxiety, low mood, brain fog, and sleep disruption.
How can a nutritional therapist help with anxiety?+
A nutritional therapist trained in functional medicine can identify gut imbalances that contribute to anxiety through microbiome testing. They then create personalised protocols to restore beneficial bacteria, reduce gut inflammation, and support neurotransmitter production — addressing the biological root of anxiety symptoms.
Further Reading
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