Gut-Brain Axis & Microbiome
"Vagus Nerve Signalling, Neurotransmitter Production & Intestinal Permeability"
Over 90% of the body's serotonin and a significant portion of GABA are generated in the gastrointestinal tract. Intestinal dysbiosis and leaky gut directly trigger neuroinflammation through bacterial lipopolysaccharides (LPS).
From Lisa Cutforth — Clinical Nutritionist
"You cannot resolve chronic brain fog, anxiety, or mood instability while the intestinal barrier is permeable. Rebuilding the gut lining and restoring microflora diversity is foundational to neural clarity."
Lisa Cutforth
BSc. Hons. (Nutrition & Psychology) · Walsh Protocol Practitioner
Cellular Pathways
Biochemical Mechanism & Systems Interplay
The body does not operate in silos. Here is the biochemical reality of how nutrient cofactors govern gut-brain axis & microbiome.
Vagal nerve afferents continuously monitor gut lumen metabolites. Short-chain fatty acids (butyrate, acetate) modulate blood-brain barrier integrity, while zonulin-mediated tight junction breakdown allows systemic endotoxemia, activating microglial cells in the central nervous system.
"When we correct enzymatic blocks with bio-available cofactors, physiology realigns naturally."
Standard blood ranges are designed to detect acute disease. We look for optimal functional biochemistry.
- Microbiome DNA Sequencing (GI-MAP / Complete Gut Audit)
- Faecal Calprotectin & Zonulin
- Short-Chain Fatty Acid Profile
- Intestinal Permeability Assessment
- SIBO Breath Testing (Hydrogen & Methane)
Therapeutic Nutrition
Where Nutrition Enters Gut-Brain Axis
Nutrients act as chemical keys for the enzymatic locks controlling your physiological state.
L-Glutamine & Zinc Carnosine (Mucosal Repair)
Prescribed based on strict individual biochemistry, therapeutic dosing windows, and cofactor synergy.
Spore-Forming Probiotics & Targeted Prebiotics
Prescribed based on strict individual biochemistry, therapeutic dosing windows, and cofactor synergy.
Sodium Butyrate & Partial Hydrolyzed Guar Gum
Prescribed based on strict individual biochemistry, therapeutic dosing windows, and cofactor synergy.
Omega-3 Fatty Acids & Polyphenols
Prescribed based on strict individual biochemistry, therapeutic dosing windows, and cofactor synergy.
Curcumin Phytosome & Boswellia
Prescribed based on strict individual biochemistry, therapeutic dosing windows, and cofactor synergy.
Expert Understanding
Frequently Asked Clinical Questions
Explore The Web
Connected Health Pillars
Women's Health & Hormones
Hormone synthesis, follicle maturation, and endometrial cycling require precise nutritional inputs across all 28 days. From heavy menstrual bleeding to perimenopausal transition, targeted nutrition balances oestrogen detoxification, luteal progesterone support, and thyroid interactions.
Adrenal & Stress Physiology
Chronic stress alters the hypothalamic-pituitary-adrenal (HPA) axis, depleting vital cofactors required for cortisol synthesis, catecholamine regulation, and thyroid activation.
Biochemical Mental Health
Mental health conditions are intimately linked to nutrient imbalances, methylation status, pyrrole disorder, and heavy metal toxicities that disrupt neurotransmitter synthesis.
Restore Your Biology with Precision
Ready to resolve your symptoms at the genetic and biochemical root? Lisa Cutforth provides bespoke, confidential consultations in Brisbane and via Telehealth Australia-wide.