Headache and Migraine Susceptibility and Your Genetics

Written by Scott Peeples, BS Biomedical Sciences · ExomeDNA Founder Reviewed by ExomeDNA Editorial Process Last reviewed: 2026-05-29

For informational purposes only. Consult a healthcare provider for clinical guidance.

Migraine is one of the most common neurological conditions in the world, affecting roughly one in seven adults globally. Far more than a bad headache, migraine is a complex neurovascular disorder characterized by recurrent attacks that typically include throbbing head pain, nausea, and sensitivity to light and sound — and in many cases, a neurological prodrome called an aura. The question of why some people experience debilitating migraines while others with similar exposures have no headaches at all has driven decades of genetic research. The answer involves dozens of common genetic variants distributed across multiple biological pathways — vascular tone regulation, trigeminal nerve sensitization, ion channel function, and cortical excitability. This page covers what genome-wide research has revealed about headache and migraine genetics, focusing on the highest-confidence gene signals identified in a large multi-ancestry GWAS (Zhou et al., 2023 [36939796]).

What is headache and migraine susceptibility?

Migraine is not a single entity but a spectrum of headache disorders sharing core neurobiological features. The International Headache Society classifies migraine with and without aura as distinct subtypes, with migraine with aura — involving transient visual, sensory, or speech disturbances before the headache phase — carrying a distinct genetic and vascular profile. Tension-type headache, cluster headache, and medication-overuse headache each have distinct features, though they share some genetic overlap with migraine.

The neuroscience of migraine has converged on a core model involving cortical spreading depression (CSD) — a wave of neuronal depolarization and suppression that propagates across the cortex and triggers the cascade of trigeminal nerve activation, inflammatory neuropeptide release (including CGRP), and peripheral and central sensitization that produces the pain and sensory symptoms of an attack.

Genetic susceptibility to migraine reflects individual differences in the thresholds for CSD initiation, trigeminal sensitization, and vascular reactivity. People with higher genetic susceptibility have nervous systems that sit closer to the threshold for a migraine cascade, making them more vulnerable to triggers such as hormonal fluctuations, sleep disruption, dehydration, or sensory overload.

~15-20% of adults experience migraine — making it the third most prevalent medical condition globally. Twin studies estimate heritability at 40–65%, confirming a strong genetic component to susceptibility.^[1]

The genetics behind headache and migraine susceptibility

The genome-wide analysis underlying this trait identified 31 independent, replicated genetic signals across the genome associated with headache and migraine susceptibility (Zhou et al., 2023 [36939796]). This polygenic architecture — many common variants each contributing a small effect — is typical of complex neurological traits and reflects the multiple biological pathways involved.

TRPM8 — temperature receptor and migraine trigger sensor

TRPM8 (Transient Receptor Potential cation channel subfamily M member 8) is among the most biologically compelling migraine genes identified to date. TRPM8 encodes a cold-sensitive ion channel expressed in trigeminal neurons — the same neurons that transmit pain signals during a migraine attack. TRPM8 is activated by cold temperatures and by cooling compounds such as menthol. Genetic variants near TRPM8 have appeared in migraine GWAS studies across multiple populations, and the channel has been explored as a potential therapeutic target. The cold-pressor migraine trigger phenomenon — in which cold exposure initiates or worsens migraine — is consistent with TRPM8's role in trigeminal sensory processing.

JAG1 — Notch signaling and vascular architecture

JAG1 (Jagged Canonical Notch Ligand 1) is the top-ranked gene in this analysis, encoding a ligand in the Notch signaling pathway. Notch signaling governs vascular smooth muscle cell differentiation, arterial specification, and blood-brain barrier integrity during development and throughout life. Variants in the Notch pathway are well established in cerebrovascular disease; JAG1 variants are known to cause Alagille syndrome, which includes vascular abnormalities. In the migraine context, JAG1 may influence cerebrovascular tone and the vascular reactivity that is central to migraine pathophysiology.

LRP1 — vascular and synaptic biology

LRP1 (LDL Receptor-Related Protein 1) is a large multifunctional endocytic receptor involved in cholesterol metabolism, synaptic transmission, and blood-brain barrier function. LRP1 has been identified in prior migraine GWAS and is among the more established migraine genes. Its presence in multiple independent migraine cohorts across studies supports a genuine biological role in migraine susceptibility, likely related to its endocytic function in trigeminal neurons and vascular smooth muscle cells.

PHACTR1 — phosphatase and actin regulator at the cardiovascular-migraine intersection

PHACTR1 (Phosphatase And Actin Regulator 1) encodes a protein that regulates actin dynamics and phosphatase activity in vascular smooth muscle cells. PHACTR1 was originally identified as a risk gene for coronary artery disease; it subsequently emerged in migraine GWAS, illustrating the shared vascular genetic architecture between migraine and cardiovascular conditions. PHACTR1 is thought to influence endothelial function and arterial tone — pathways relevant to the vascular phase of migraine.

RNF213 — vascular remodeling

RNF213 encodes an E3 ubiquitin ligase involved in vascular remodeling. RNF213 is best known as the causative gene for moyamoya disease, a rare cerebrovascular disorder characterized by progressive arterial stenosis and compensatory neovascularization. Its appearance in a migraine GWAS reflects the broader role of vascular remodeling genes in headache susceptibility, particularly in conditions involving cerebrovascular reactivity.

TSPAN2 — oligodendrocyte and myelin biology

TSPAN2 encodes a tetraspanin protein expressed predominantly in oligodendrocytes — the myelin-producing cells of the central nervous system. Oligodendrocyte biology has emerged as a recurring theme in migraine genetics; myelin integrity influences axonal conduction velocity and cortical excitability, both relevant to CSD threshold.

IRAG1 and calcium signaling

IRAG1 (IP3 Receptor Associated cGMP Kinase Substrate 1) encodes a substrate of cGMP-dependent protein kinase that regulates IP3 receptor-mediated calcium release from the endoplasmic reticulum. Calcium dynamics in smooth muscle cells and neurons are central to vascular tone and neuronal excitability — both migraine-relevant pathways.

From the broader gene set

Additional authorized genes in this analysis include:

• CAMK1D (calcium/calmodulin-dependent protein kinase ID) — CaM kinase signaling regulates neuronal excitability and synaptic plasticity, consistent with a role in CSD threshold regulation
• CHRM4 (muscarinic acetylcholine receptor M4) — cholinergic signaling has been implicated in headache physiology, and muscarinic receptors modulate autonomic tone relevant to migraine pathophysiology
• DGKZ (diacylglycerol kinase zeta) — lipid signaling enzyme that terminates diacylglycerol signals, relevant to PKC pathway regulation in neurons
• ASTN2 (astrotactin 2) — expressed in brain; functionally related to astrotactin 1, which is involved in neuronal migration and cerebellar development

31 replicated credible signals were identified in the genome-wide analysis underlying this trait (Zhou et al., 2023), making migraine one of the most genetically well-characterized common neurological conditions studied to date.^[1]

What the research says

Research base: Moderate. The genome-wide association study underlying this trait (Zhou et al., 2023, PMID 36939796) is a large-scale multi-ancestry analysis of headache and migraine phenotypes examining a broad population. The study identified 31 independent credible genetic signals, providing one of the most comprehensive polygenic maps of migraine susceptibility available.

The moderate confidence designation reflects the real-world complexity of migraine phenotyping in population studies: migraine is self-reported and heterogeneous, encompassing multiple subtypes with overlapping but distinct biology. Effect sizes for individual variants are small, consistent with the polygenic architecture of complex neurological traits. The cumulative polygenic signal, however, is well-supported and robustly replicated across multiple independent cohorts.

For methodological context on how ExomeDNA integrates GWAS evidence, gene prioritization, and confidence tiering, see the methodology page.

The biological richness of the gene set — TRPM8 in trigeminal pain processing, JAG1 and LRP1 in vascular biology, PHACTR1 at the cardiovascular-migraine intersection — is consistent with the known neurovascular pathomechanism of migraine and provides mechanistic interpretability beyond a purely statistical signal.

How headache and migraine susceptibility affects you

A higher polygenic score on this trait suggests a genetic architecture associated with increased susceptibility to headache and migraine episodes. This means the nervous system may have a lower threshold for the cascade of events — cortical spreading depression, trigeminal sensitization, vascular reactivity — that produces a migraine attack.

This does not mean that a migraine is inevitable. Genetic susceptibility interacts with a wide range of environmental and behavioral factors. Many people with high genetic susceptibility successfully manage migraine frequency through lifestyle adjustments and, when appropriate, clinical treatment. Many people with lower genetic susceptibility can experience migraine under sufficient provocation.

What the genetic profile does offer is a framework for understanding individual vulnerability. Someone with high genetic susceptibility whose nervous system sits closer to the threshold for a migraine attack may need less provocation from triggers to initiate an episode. This framework supports a proactive approach: understanding personal triggers, maintaining lifestyle regularity, and working with a healthcare provider to identify appropriate management strategies.

Migraine significantly affects quality of life. For anyone managing frequent headaches, the combination of genetic context and clinical assessment provides a more complete picture than either alone.

Working with your profile

Unlike FTD, migraine is a condition where behavioral and lifestyle factors meaningfully modulate attack frequency and severity. A high polygenic score for migraine susceptibility supports investing in evidence-based management strategies:

Sleep regularity: Irregular sleep is one of the most common and consistent migraine triggers. Maintaining a consistent sleep schedule — including on weekends — reduces the frequency of attacks driven by sleep disruption. The neural mechanisms likely involve hypothalamic regulation of circadian rhythms and arousal thresholds that gate CSD susceptibility.

Hydration: Dehydration is a well-documented migraine trigger. For anyone with genetic migraine susceptibility, maintaining consistent fluid intake throughout the day is a simple and evidence-supported behavioral modification.

Hormonal awareness: Migraine prevalence is three times higher in women than men, largely because of hormonal influences on CSD threshold. For women, tracking migraine patterns relative to the menstrual cycle and discussing hormonal management options with a healthcare provider can be informative.

Trigger identification: Common triggers include alcohol (particularly red wine and beer — via histamine and sulfite pathways), aged cheeses, skipped meals, bright or flickering lights, strong odors, and barometric pressure changes. A headache diary — paper or app-based — is one of the most evidence-supported tools for identifying personal trigger patterns.

Dietary patterns: Some evidence supports ketogenic and low-glycemic diets for migraine frequency reduction, potentially through mechanisms involving neuronal energy metabolism — a pathway adjacent to the calcium signaling and lipid metabolism genes in this trait. Omega-3 fatty acids have also shown some evidence in reducing migraine frequency.

Exercise: Regular aerobic exercise reduces migraine frequency in multiple studies — likely through endorphin release, autonomic nervous system regulation, and anti-inflammatory effects. Notably, intense exercise can itself be a trigger during susceptible periods; low-to-moderate intensity is typically best for migraine management.

Clinical pharmacology: For anyone experiencing frequent or debilitating migraines, preventive medications (including CGRP antagonists — a mechanistically relevant class given migraine's neurovascular biology) and acute treatments are appropriate clinical discussions. Nothing on this page substitutes for clinical evaluation.

This page is for educational purposes only. ExomeDNA does not provide clinical guidance. For health-related questions or concerns, please consult a qualified healthcare provider.

Related traits and genes

Migraine genetics overlaps with several adjacent conditions tracked in ExomeDNA's trait library:

• Cardiovascular Disease Risk — PHACTR1 and LRP1 appear in both cardiovascular and migraine GWAS, reflecting shared vascular biology
• Anxiety and Stress Response — cortical excitability and autonomic dysregulation are shared mechanisms between migraine and anxiety; genetic overlap exists at several loci
• Sleep Quality — sleep disruption is both a trigger and a consequence of migraine; genetic architecture of sleep traits shows partial overlap with migraine susceptibility
• Cognitive Function — cortical spreading depression, repeated migraine attacks, and the shared brain network biology of migraine are relevant to cognitive trait pages
• Stroke Risk — migraine with aura is an established risk factor for ischemic stroke; shared vascular genes (RNF213, JAG1, PHACTR1) bridge both trait families

Key genes featured on this page: JAG1 (Notch/vascular, rank 1), TSPAN2 (oligodendrocyte/myelin, rank 2), IRAG1 (calcium/cGMP signaling, rank 4), RNF213 (vascular remodeling, rank 5), TRPM8 (cold/pain receptor, rank 8), PHACTR1 (vascular actin regulator, rank 11), LRP1 (endocytic receptor/vascular, rank 21), CAMK1D (CaM kinase), CHRM4 (muscarinic receptor), DGKZ (diacylglycerol kinase).

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References:

1. Zhou W, et al. Genome-wide association study of headache or migraine in the UK Biobank and Estonian Biobank reveals new risk loci and phenotypic associations. Nat Genet. 2023;55(4):552-558. PMID: 36939796

Frequently asked questions

Q: Is migraine hereditary? A: Yes, migraine has a strong genetic component. Twin studies estimate heritability at 40–65%, meaning genetic factors explain roughly half of an individual's susceptibility to migraine. No single gene causes migraine in most people — instead, dozens of common variants each contribute small effects, and the combination of your polygenic score plus environmental triggers determines your overall susceptibility.

Q: What does TRPM8 have to do with migraines? A: TRPM8 encodes a cold-sensitive ion channel expressed in trigeminal neurons — the pain-transmitting neurons active during a migraine attack. Variants near TRPM8 have been identified in multiple independent migraine GWAS studies. TRPM8 is activated by cold temperatures, which may partly explain why some migraine sufferers find cold triggers (such as ice cream headaches or cold air) more provocative than others.

Q: Can I reduce migraine frequency if I have a high genetic susceptibility score? A: Yes. Genetic susceptibility reflects a lower threshold for migraine attacks, not an unchangeable fate. Many people with high polygenic susceptibility successfully reduce attack frequency through consistent sleep schedules, hydration, trigger identification and avoidance, regular exercise, and — when appropriate — clinical preventive treatments. Consulting a neurologist or headache specialist is particularly valuable for frequent or disabling migraine.

Q: Why are migraine genes related to heart disease? A: Several genes identified in migraine GWAS — including PHACTR1 and LRP1 — also appear in cardiovascular GWAS studies. This reflects shared vascular biology: migraine involves changes in blood vessel tone and endothelial function, and the same genes that regulate vascular smooth muscle behavior during a migraine attack also influence cardiovascular physiology more broadly. Migraine with aura in particular has established epidemiological associations with stroke and cardiovascular events.

Q: How is a polygenic score for migraine different from a clinical assessment? A: A polygenic score for migraine reflects the sum of common genetic variant effects on susceptibility — it is a biological background score, not a clinical evaluation. A clinical assessment by a neurologist or headache specialist incorporates your symptom pattern, frequency, duration, associated features, family history, and response to treatments. Genetic information can complement clinical assessment but does not replace it. For anyone experiencing frequent or disabling headaches, clinical evaluation is the appropriate first step.