Driver 01
🦠
The Root
Gut Dysbiosis
Disrupted gut microbiome reduces SCFA production, weakens the gut barrier and triggers systemic LPS-driven inflammation that reaches every organ.
Driver 02
🔥
The Amplifier
HPA Axis Dysregulation
Chronic stress — including trauma — keeps cortisol elevated, driving insulin resistance, androgen excess, neuroinflammation and suppressing serotonin production simultaneously.
Driver 03
⚡
The Consequence
Central Sensitisation
The nervous system becomes amplified — pain signals, emotional signals and sensory signals are turned up body-wide. Every condition listed above is linked to this mechanism.
The Gut-Brain Axis — The Missing Piece That Connects Everything
How One System Drives All Nine Conditions
Gut Dysbiosis
→
↑ LPS Endotoxin
→
TLR4 Activation
→
Systemic Inflammation
→
All Conditions Worsen
The gut produces 95% of the body's serotonin. When gut dysbiosis impairs serotonin synthesis, depression, OCD and anxiety follow directly. The same dysbiosis activates inflammatory pathways that drive insulin resistance (PCOS), central sensitisation (fibromyalgia, plantar fasciitis), visceral hypersensitivity (IBS) and elevated androgens (hair loss). This is one system, expressing in many ways.
How gut dysbiosis shows up in each condition
Depression / Anxiety / OCD
Reduced serotonin & GABA synthesis; elevated neuroinflammatory cytokines impair mood regulation
Fibromyalgia
Pro-inflammatory species amplify central sensitisation; reduced butyrate impairs pain gating
IBS
Dysbiosis directly causes visceral hypersensitivity, dysmotility and leaky gut — IBS co-occurs in 50–70% of fibromyalgia
PCOS / Metabolism
LPS activates TLR4 → insulin resistance → hyperinsulinaemia → androgen excess — which can manifest as a range of hormonal and physical signs worth discussing with a specialist
Root Causes — Why These Six Conditions Share Biology
😔
HPA Axis & Serotonin Deficit
Chronic stress, trauma and gut dysbiosis reduce serotonin synthesis and deplete dopamine precursors. Sustained high cortisol shrinks the hippocampus and reduces serotonin receptor density — directly driving depression, anxiety and OCD compulsive loops.
DepressionAnxietyOCD
🔥
Central Sensitisation
Neuroinflammatory cytokines lower the pain threshold body-wide. Confirmed in 85.8% of chronic plantar fasciitis patients, fibromyalgia and IBS. The nervous system amplifies all signals — pain, emotion, sensation — simultaneously.
FibromyalgiaPlantar Fasc.IBS
🦠
Gut Barrier Dysfunction & Dysbiosis
Reduced microbial diversity and SCFA-producing bacteria impair intestinal barrier integrity. Bacterial LPS enters circulation, activating TLR4 inflammatory pathways that reach the brain, ovaries, fascial tissue and pain processing centres simultaneously.
IBSFibromyalgiaPCOSDepression
⚖️
Insulin Resistance & Androgen Excess
Elevated cortisol and gut LPS trigger insulin resistance, causing compensatory hyperinsulinaemia that drives androgen overproduction. This creates the PCOS phenotype — and often presents with additional physical signs such as changes in body composition and hair that may not yet have been connected to this hormonal cycle.
PCOSFibromyalgiaDepression
🧠
Neuroinflammation & Oxidative Stress
Systemic inflammation crosses the blood-brain barrier, activating microglia and generating reactive oxygen species. This impairs mitochondrial function in neurons — reducing neurotransmitter synthesis, impairing executive function and amplifying compulsive neural loops (OCD).
OCDDepressionFibromyalgia
🦶
Trauma, Weight & Mechanical Load
Abdominal weight gain from insulin resistance increases plantar fascia mechanical load. Chronically elevated cortisol from trauma drives visceral adiposity and systemic inflammation. Each feeds the other — this is not lack of willpower; it is a biochemical cycle.
Plantar Fasc.PCOSDepression
First-Line Supplements — Evidence-Based, Condition-Targeted
1
Magnesium Glycinate
or Threonate for brain
Cofactor for serotonin and GABA synthesis. Deficiency is near-universal in depression, anxiety and fibromyalgia. Reduces cortisol reactivity, relaxes central sensitisation, reduces muscle pain. Glycinate best for anxiety and sleep; threonate crosses the blood-brain barrier.
DepressionAnxietyFibromyalgiaOCD
2
Myo-Inositol
+ D-Chiro Inositol (40:1 ratio)
The single most evidence-backed supplement for PCOS. Improves insulin sensitivity, restores ovarian function, reduces androgens, and improves hair loss. Also reduces OCD severity (RCTs) via serotonin receptor signalling. Reduces anxiety. Naturally found in fruit — depleted in insulin resistance.
PCOSOCDAnxiety
3
Vitamin D3 + K2
Always combine
Deficiency is confirmed in depression, fibromyalgia and PCOS. D3 modulates immune tolerance, supports serotonin synthesis genes, and reduces central sensitisation via VDR receptors in pain-processing regions. Improves insulin sensitivity and reduces androgen excess in PCOS.
DepressionFibromyalgiaPCOS
4
Omega-3 (EPA/DHA)
High EPA ratio for mood
Meta-analyses confirm EPA reduces depression severity. Resolves neuroinflammation, restores gut barrier integrity, modulates central sensitisation pathways and reduces the inflammatory cytokines that drive fibromyalgia pain. EPA:DHA ratio of at least 2:1 is the evidence-based target for mood.
DepressionFibromyalgiaIBSPCOS
5
Multi-Strain Probiotic
Lactobacillus + Bifidobacterium
Directly targets the root cause — gut dysbiosis. Restores SCFA production, repairs gut barrier, reduces LPS leakage and systemic inflammation. L. rhamnosus reduces OCD-like behaviours and anxiety (RCT evidence). L. acidophilus reduces IBS severity. Start low and build slowly.
IBSOCDDepressionPCOS
6
NAC
N-Acetyl Cysteine 600mg
Glutathione precursor and glutamate modulator — RCTs show NAC reduces OCD severity by normalising glutamate levels in the striatum. Also reduces oxidative stress in fibromyalgia and supports gut barrier repair. One of the most well-evidenced supplements for OCD alongside inositol.
OCDFibromyalgiaDepression
7
Methylated B-Complex
5-MTHF + Methylcobalamin
MTHFR variants (very common in depression/anxiety) impair folate methylation, reducing serotonin, dopamine and norepinephrine synthesis. Methylfolate is the most well-evidenced adjunct to antidepressants. B12 supports myelin and nerve function. Also reduces homocysteine — elevated in PCOS and depression.
DepressionOCDPCOS
⚠ Start very low — some people react to methyl donors. Try 1/4 dose first.
8
Berberine
Natural insulin sensitiser
Activates AMPK — the same pathway as metformin — to reduce insulin resistance, lower androgens, and restore menstrual regularity in PCOS. Also modulates gut microbiome composition directly, reducing pro-inflammatory species. RCTs show comparable effect to metformin for PCOS metabolic markers.
PCOSIBSFibromyalgia
⚠ Do not take if on medications — interacts with several drugs. GP check first.
9
Ashwagandha (KSM-66)
Adaptogen · cortisol regulator
KSM-66 is the most studied standardised extract. RCTs show significant reduction in cortisol, anxiety scores and perceived stress. Reduces HPA axis hyperactivation — the driver behind insulin resistance, androgen excess and central sensitisation. Also reduces hair loss markers in stress-related alopecia.
AnxietyPCOSFibromyalgiaDepression
10
Zinc + Selenium
Thyroid, androgen & hair
Zinc inhibits 5-alpha reductase — the enzyme that converts testosterone to DHT, the primary driver of hair loss in PCOS. Selenium is essential for thyroid function and reduces androgen receptor sensitivity. Both are commonly depleted in PCOS and depression. Also essential cofactors for gut barrier repair.
PCOSDepressionFibromyalgia
⚠ Don't take zinc on empty stomach. Take with 2mg copper if using long-term.
Synergistic Lifestyle Foundations
🍽️
Low-Glycaemic, Anti-Inflammatory Diet
Reduces insulin spikes (PCOS), feeds beneficial gut bacteria (IBS/mood), and reduces central sensitisation. Prioritise fibre, omega-3s, polyphenols. Reduce ultra-processed foods and refined carbohydrates.
🚶
Gentle Daily Movement
Even 20 mins walking daily improves insulin sensitivity, reduces cortisol, increases BDNF (brain repair factor) and reduces fibromyalgia pain scores. For plantar fasciitis: supportive footwear and calf stretching first thing in the morning.
🌬️
Nervous System Regulation
Trauma-informed therapy (somatic, EMDR or trauma-focused CBT) directly addresses HPA dysregulation — the upstream driver. Diaphragmatic breathing activates the vagus nerve and shifts the nervous system from sympathetic to parasympathetic daily.
😴
Sleep Prioritisation
Poor sleep increases cortisol, worsens insulin resistance, reduces pain threshold (fibromyalgia), and impairs gut barrier repair. Consistent sleep-wake times regulate HPA rhythm. Magnesium glycinate at night supports this directly.
☀️
Sunlight & Circadian Rhythm
Morning light exposure regulates cortisol rhythm, supports Vitamin D synthesis and synchronises gut microbiome circadian activity. Even 10 minutes outside first thing meaningfully impacts HPA axis regulation across all conditions.
📋 Suggested Implementation — One Phase at a Time
1
Weeks 1–4
Foundation
Magnesium Glycinate + Vitamin D3/K2 + Omega-3. Address the most universal deficiencies. Establish tolerability.
2
Weeks 4–8
Gut & Hormones
Add Probiotic + Myo-Inositol. Directly target gut dysbiosis and PCOS insulin-androgen cycle. Allow 6–8 weeks for full effect.
3
Weeks 8–12
Brain & Pain
Add NAC + Ashwagandha. Target OCD glutamate loop, central sensitisation and HPA cortisol dysregulation.
4
Week 12+
Fine-Tuning
Add Methylated B-Complex + Berberine + Zinc/Selenium. Methylation, insulin sensitisation and androgen control.