Migraine: The Complete Clinical Guide — Neuroscience, Triggers & Nutritional Medicine

Migraine is not just a bad headache. It is a complex neurological disease — the second leading cause of disability worldwide — affecting approximately 1 in 7 people globally and three times more common in women than men. Yet for most sufferers, the clinical conversation begins and ends with triptans or preventive medications. What rarely happens is a systematic investigation of the underlying drivers: mitochondrial dysfunction, magnesium deficiency, serotonin dysregulation, neuroinflammation, hormonal shifts, and nutritional gaps that collectively lower the threshold at which the brain fires.

This article is for informational purposes only and does not constitute medical advice. Please consult a qualified healthcare professional for diagnosis and treatment.

Understanding Migraine: What's Actually Happening in the Brain

A migraine attack unfolds in four distinct phases, each with its own neurobiology. Understanding this sequence is essential for understanding why nutritional interventions work — and at which point in the cascade they act.

The Prodrome (Hours to Days Before)

Up to 77% of migraineurs experience warning symptoms 24–48 hours before head pain begins — yawning, food cravings, neck stiffness, mood changes, fatigue, and light sensitivity. These originate in the hypothalamus, which functions as the migraine pacemaker. Hypothalamic activation alters dopamine signalling (explaining the yawning and cravings) and begins sensitising the trigeminal system long before pain arrives.

The Aura (in ~30% of Cases)

Aura is caused by Cortical Spreading Depression (CSD) — a slow wave of neuronal depolarisation followed by suppression that moves across the cortex at 3–5mm per minute. As it crosses the visual cortex, it produces the classic scintillating scotoma (zigzag lights). CSD releases glutamate and potassium into the extracellular space, activates trigeminal nerve fibres surrounding cortical blood vessels, and triggers the release of CGRP — the master pain-amplifying neuropeptide of migraine. Critically, CSD requires enormous ATP to restore ionic gradients afterwards. This is where mitochondrial dysfunction becomes the central vulnerability.

The Headache (4–72 Hours)

The throbbing, typically unilateral pain of migraine is driven by activation of the trigeminovascular system — the network of trigeminal nerve fibres innervating the meningeal blood vessels. CGRP causes vasodilation of meningeal vessels, producing pulsatile pain, while also sensitising trigeminal neurons and promoting neurogenic inflammation. Substance P and neurokinin A are co-released, causing plasma protein extravasation and sterile meningeal inflammation. As central sensitisation develops, allodynia sets in — normal touch becomes painful — and even triptans may no longer fully abort the attack.

Serotonin drops acutely during the attack, withdrawing descending pain inhibition. Triptans work precisely by mimicking serotonin at 5-HT1B/1D receptors on trigeminal fibres and meningeal vessels.

The Postdrome (Up to 48 Hours After)

The “migraine hangover” — fatigue, cognitive fog, mood changes, and residual head sensitivity — reflects ongoing hypothalamic and brainstem dysregulation, with neuroinflammatory mediators still elevated and cerebral blood flow still altered. This phase is often as debilitating as the headache itself.

The Migraine Brain: Structurally and Functionally Different

The migraine brain is not a normal brain between attacks. Neuroimaging and electrophysiological studies consistently reveal:

  • Cortical hyperexcitability — a lower threshold for CSD; the migraine brain is primed to fire in response to stimuli that a non-migraine brain would habituate to
  • Reduced habituation — normal brains dampen their response to repeated stimuli; migraine brains amplify them, explaining inter-ictal light and sound sensitivity
  • Hypothalamic dysregulation — altered circadian rhythms, sleep architecture, and autonomic tone
  • Mitochondrial dysfunction — reduced ATP production in cortical neurons; phosphorus MRS studies show reduced phosphocreatine and ATP in migraine brains even between attacks
  • Intracellular magnesium deficiency — measurably lower in migraineurs, particularly during attacks; magnesium stabilises neuronal membranes and blocks the NMDA receptors that drive CSD
  • Serotonin dysregulation — chronically altered serotonin metabolism between attacks; low inter-ictal serotonin lowers the migraine threshold

The Mitochondrial Hypothesis: Why Energy Is Everything

The most compelling and evidence-backed theory of migraine pathophysiology centres on mitochondrial dysfunction. The evidence is striking: migraineurs show reduced mitochondrial complex I activity in platelets and muscle biopsies; phosphocreatine recovery after neuronal activity is impaired; and mitochondrial diseases such as MELAS and MERRF have migraine as a cardinal feature.

The logic is elegant: CSD requires massive ATP to restore Na⁺/K⁺ ionic gradients. If mitochondria cannot keep up with this demand, the threshold for the next CSD drops — making the next attack more likely. This explains why migraine is reliably triggered by anything that increases neuronal energy demand (stress, sleep deprivation, fasting, intense exercise) or reduces energy supply (hypoglycaemia, dehydration). It also explains why CoQ10, riboflavin (B2), and magnesium — all mitochondrial cofactors — have the strongest RCT evidence for migraine prevention of any nutritional interventions.

Key Neurotransmitters and Neuropeptides

CGRP (Calcitonin Gene-Related Peptide) is the master pain amplifier of migraine — released from trigeminal fibres, it drives vasodilation, neurogenic inflammation, and trigeminal sensitisation. It is now the primary target of the newest class of migraine-specific medications (gepants and monoclonal antibodies such as erenumab). Magnesium reduces CGRP release; omega-3 fatty acids modulate neurogenic inflammation downstream.

Serotonin (5-HT) drops during attacks, withdrawing descending pain inhibition. Between attacks, migraineurs have chronically lower serotonin levels and altered receptor sensitivity. Supporting serotonin synthesis with 5-HTP, B6, magnesium, and zinc raises the inter-ictal threshold.

Glutamate excess drives CSD and central sensitisation via NMDA receptor over-activation. Magnesium is the physiological NMDA channel blocker — its deficiency directly lowers the CSD threshold.

Substance P is co-released with CGRP and drives neurogenic inflammation and pain amplification. Curcumin inhibits substance P release and is one of the most mechanistically relevant natural compounds for migraine.

Dopamine dysregulation in the hypothalamus drives prodromal symptoms. Dopamine receptor hypersensitivity in migraineurs explains the nausea, yawning, and food cravings that precede attacks.

Common Migraine Triggers: The Threshold Model

No single trigger causes migraine. Rather, multiple factors accumulate to push the brain past its individual threshold — which is why the same trigger doesn’t always produce an attack. The threshold model explains everything: when the brain is well-nourished, well-rested, and hormonally balanced, it can tolerate triggers that would otherwise fire an attack.

The most clinically significant triggers include hormonal shifts (particularly the oestrogen drop at menstruation, perimenopause, or pill withdrawal), sleep disruption, psychological stress and its “let-down” aftermath, dietary factors (alcohol, aged cheese, processed meats, MSG, caffeine withdrawal, fasting), sensory overload, dehydration, hypoglycaemia, and — critically — nutritional deficiencies in magnesium, CoQ10, riboflavin, and vitamin D that directly impair mitochondrial function and neuronal stability.

Nutritional Medicine for Migraine: The Clinical Evidence

Magnesium: The Most Evidence-Based Nutritional Intervention

Magnesium is the single most studied nutritional intervention in migraine, supported by multiple RCTs and meta-analyses. Its mechanisms are uniquely suited to migraine pathophysiology: it blocks NMDA receptors (raising the CSD threshold), stabilises neuronal membranes, inhibits CGRP release from trigeminal fibres, supports serotonin synthesis as a cofactor for tryptophan hydroxylase, functions as a mitochondrial cofactor for ATP synthase, and reduces platelet aggregation (platelet serotonin release is a trigger mechanism). Intracellular magnesium is measurably low in up to 50% of migraineurs during attacks.

Form matters critically. Glycinate and threonate have the best CNS penetration; oxide has poor bioavailability and should be avoided for neurological indications.

👉 RNLabs Magnesium L-Threonate Powder — crosses the blood-brain barrier most effectively; optimal for migraine prevention and cortical stability
👉 RN Labs Magnesium Glycinate 180c — best tolerated; excellent bioavailability; first-line for daily prevention protocol
👉 RN Labs Magnesium Glycinate 90c
👉 UltraMag Magnesium — highly bioavailable multi-form complex
👉 Magnesium Powder — flexible dosing; easy to titrate up gradually
👉 Magnesium Liquid

Clinical dose: 400–600mg elemental magnesium daily for prevention. Allow 8–12 weeks for full effect.

CoQ10 (Ubiquinol): The Mitochondrial Powerhouse

CoQ10 is an essential component of the mitochondrial electron transport chain at complexes I, II, and III. In migraine, it directly addresses the core mitochondrial energy deficit: restoring complex I activity (the most consistently deficient enzyme in migraineurs), increasing ATP production in cortical neurons, reducing mitochondrial oxidative stress, and lowering neuroinflammatory markers including CGRP.

A landmark RCT (Sandor et al., 2005) showed 300mg CoQ10 daily reduced migraine frequency by 47.6% versus 14.4% for placebo over 3 months. Ubiquinol — the reduced, active form — is significantly more bioavailable than ubiquinone, particularly in adults over 40 whose conversion capacity declines.

👉 Designs for Health COQNOL 100 60sg — practitioner-grade ubiquinol (active reduced form); superior bioavailability; 3 capsules daily reaches the clinical prevention dose

Clinical dose: 300–400mg/day ubiquinol. Allow 3 months before assessing efficacy.

Riboflavin (Vitamin B2): The Mitochondrial Cofactor

Riboflavin is the precursor to FAD and FMN — the essential cofactors for mitochondrial complexes I and II. High-dose riboflavin directly supports electron transport chain function, reduces mitochondrial oxidative stress, and improves phosphocreatine recovery after neuronal activity. It is synergistic with CoQ10 and magnesium — together these three form the “mitochondrial triple” that represents the strongest evidence-based nutritional prevention stack for migraine.

Schoenen et al. (1998) showed 400mg riboflavin daily reduced migraine frequency by 50% in 59% of patients. European headache guidelines now recommend riboflavin as a first-line preventive option. Note: urine turns bright yellow at therapeutic doses — this is harmless and confirms absorption.

👉 Solgar Vitamin B2 (Riboflavin) 100mg 100 Vcaps — pure riboflavin; 4 capsules daily reaches the 400mg clinical dose
👉 BePure B-Vit Energy Restore 60 veg caps — comprehensive B-complex including active B2, B6, and methylcobalamin; supports the full neurotransmitter and mitochondrial pathway
👉 BePure B-Vit Energy Restore 30 caps

Omega-3 Fatty Acids: Anti-Neuroinflammatory and CGRP Modulation

EPA and DHA address the neuroinflammatory component of migraine through multiple pathways: generating specialised pro-resolving mediators (SPMs — resolvins, protectins, maresins) that actively resolve neurogenic inflammation; reducing CGRP release from trigeminal fibres; incorporating into neuronal membranes to reduce cortical hyperexcitability; competing with arachidonic acid to reduce prostaglandin E2 and thromboxane A2 (a platelet aggregation trigger); and modulating serotonin receptor sensitivity.

A landmark 2021 BMJ RCT (Ramsden et al.) showed a high omega-3 / low omega-6 diet reduced headache days by 4 per month versus control — one of the largest effect sizes seen in any migraine prevention trial.

👉 Pro-Resolve Omega — SPM-concentrated formula; the most targeted option for neurogenic inflammation resolution
👉 O.N.E. Omega — high-potency single daily dose; excellent EPA+DHA ratio
👉 Nordic Naturals Arctic-D Cod Liver Oil 237ml — omega-3 + D3; dual benefit for migraine prevention
👉 Lifestream Vegan Omega-3 90 VegeCap — algae-sourced DHA/EPA; ideal for plant-based patients

5-HTP: Restoring the Serotonin Threshold

Between attacks, migraineurs have chronically lower serotonin levels and altered 5-HT receptor sensitivity. During an attack, serotonin drops acutely, withdrawing descending pain inhibition. 5-HTP (5-hydroxytryptophan) is the direct precursor to serotonin, crosses the blood-brain barrier readily, and raises inter-ictal serotonin levels to elevate the migraine threshold. It also supports melatonin synthesis, improving sleep architecture — disrupted sleep being one of the most reliable migraine triggers. A clinical trial (Titus et al.) showed 5-HTP comparable to methysergide for migraine prevention with far superior tolerability.

Important: Do not combine with triptans, MAOIs, or SSRIs without practitioner supervision due to serotonin syndrome risk.

👉 Designs for Health 5-HTP Supreme 60cap — practitioner-grade 5-HTP with cofactors; first-line for serotonin support in migraine
👉 Doctor's Best 5-HTP Enhanced with Vitamins B6 and C 120 Capsules — 5-HTP with B6 and C cofactors for optimal serotonin conversion
👉 Doctor's Best 5-HTP 100mg 60vc
👉 5-HTP 50mg — lower dose for sensitive individuals or initial titration

Curcumin: Neuroinflammation and CGRP Suppression

Curcumin targets multiple migraine mechanisms simultaneously: inhibiting NF-κB to reduce neuroinflammatory cytokines (TNF-α, IL-1β, IL-6) that sensitise trigeminal fibres; suppressing substance P and CGRP release; activating Nrf2 to reduce mitochondrial oxidative stress; upregulating BDNF to support inhibitory neuron health and reduce central sensitisation; and inhibiting COX-2 to reduce prostaglandin-mediated pain. Bioavailability is the critical variable — standard curcumin has poor oral absorption and enhanced delivery systems are essential for clinical effect.

👉 NatroCeutics Curcumin Complete 60caps — enhanced absorption matrix; NZ-made practitioner grade
👉 NatroCeutics Curcumin Complete 30caps
👉 Coyne Bio-Curcumin 400mg BCM95 30caps — BCM95 phospholipid complex; 7x more bioavailable than standard curcumin
👉 Solgar Full Spectrum Curcumin 90 Sgels — liposomal delivery
👉 Solgar Full Spectrum Curcumin 30 Sgel

Vitamin D: The Overlooked Migraine Nutrient

Vitamin D deficiency is significantly more prevalent in chronic migraine sufferers than the general population. Vitamin D modulates the serotonin synthesis gene (TPH2) in the brain, supporting inter-ictal serotonin levels; reduces neuroinflammation via VDR on glial cells and neurons; regulates CGRP expression; and supports magnesium absorption (magnesium is required for vitamin D hydroxylation — the two nutrients are deeply interdependent). Observational studies consistently show an inverse correlation between vitamin D levels and migraine frequency. NZ’s latitude makes deficiency extremely common, particularly in winter. Target 25(OH)D above 100 nmol/L.

👉 Vitamin D3 Liquid — flexible dosing for therapeutic titration
👉 Vitamin D3 Vegan Liquid
👉 Vitamin D3 1000 IU
👉 NOW Vitamin D-3 1000IU & K-2 45mcg 120VC — D3+K2 combination
👉 Prima Vitamin D Test Kit — test before supplementing; essential for accurate dosing

Hormonal Migraine: A Special Case

Menstrual migraine — occurring within 2 days of menstruation onset — is driven by the sharp drop in oestrogen that triggers the period. Oestrogen modulates serotonin receptor density, CGRP expression, and trigeminal sensitivity, so its withdrawal is profoundly destabilising for the migraine brain. This is the most treatment-resistant form of migraine and the most common reason women’s migraine worsens in perimenopause.

Nutritional strategies specifically relevant to hormonal migraine include higher-dose magnesium in the 10 days before menstruation, 5-HTP to support serotonin during the low-oestrogen phase, active B6 (P5P) to support oestrogen metabolism and serotonin synthesis, omega-3 to reduce prostaglandin-mediated uterine cramping (a co-trigger), and vitamin D to modulate oestrogen receptor sensitivity.

A Practical Migraine Prevention Protocol

Based on the evidence above, a comprehensive nutritional prevention protocol for migraine might include:

What to Investigate

A thorough migraine workup should include magnesium (RBC magnesium is more accurate than serum), vitamin D (25-OH-D), full thyroid panel (TSH, free T3, free T4, antibodies), sex hormones (oestradiol, progesterone, testosterone, DHEA-S, LH, FSH) particularly in women with menstrual migraine, fasting glucose and insulin (to assess metabolic drivers), CRP (neuroinflammation marker), B12 and folate (methylation status), and homocysteine. In women with suspected hormonal migraine, a DUTCH test provides the most comprehensive picture of oestrogen metabolism and cortisol patterns.

The Bottom Line

Migraine is rarely a single-cause condition. In most cases it is the visible expression of a convergence of factors — mitochondrial energy deficits, magnesium depletion, serotonin dysregulation, neuroinflammation, hormonal shifts, poor sleep, and nutritional gaps — operating simultaneously on a brain that is constitutionally more excitable than average.

The good news: most of these drivers are modifiable. A systematic investigation followed by targeted nutritional intervention — particularly the mitochondrial triple of magnesium, CoQ10, and riboflavin — can meaningfully reduce migraine frequency, duration, and severity in the majority of sufferers, particularly when implemented consistently over 3–6 months.

Our dispensary stocks practitioner-grade formulations selected for bioavailability and clinical relevance. Browse our Wellness Dispensary or contact our team for personalised guidance.

Disclaimer: This article is for informational purposes only and does not constitute medical advice. Migraine diagnosis and treatment should be managed by a qualified healthcare professional.

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