According to Gram Research analysis, a study of 95 migraine patients identified four distinct migraine types based on pain location and symptoms, but vitamin D deficiency was equally common across all types and didn’t significantly differ between groups. While 67% of migraine patients had low vitamin D, being female was a stronger predictor of severe migraines than vitamin D levels, suggesting that vitamin D supplementation alone may not be the primary solution for migraine control.
Researchers studied 95 migraine patients to see if low vitamin D levels caused different types of migraines. They found four distinct migraine patterns based on pain location, disability level, and body symptoms. While vitamin D deficiency was very common in all groups, it didn’t explain why some people had worse migraines than others. Interestingly, being female was a stronger predictor of severe migraines than vitamin D levels. The findings suggest that migraine types are real and measurable, but vitamin D deficiency alone isn’t the main driver of migraine severity.
Key Statistics
A 2026 cross-sectional study of 95 migraine patients found that 67.4% had vitamin D levels below 20 ng/mL, but vitamin D deficiency did not significantly differ across four distinct migraine phenotypes identified by cluster analysis.
According to a 2026 analysis of 95 migraine patients, female sex was the only significant predictor of severe migraine phenotype membership, with women 3.37 times more likely to have highly disabling migraines compared to men.
A 2026 study of 95 migraine patients found that vitamin D deficiency prevalence (67.4%) was statistically similar to the general Saudi population (63-65%), indicating the deficiency is a background population phenomenon rather than migraine-specific.
The Quick Take
- What they studied: Whether different types of migraines are linked to different vitamin D levels in the blood
- Who participated: 95 migraine patients (mostly from Saudi Arabia based on context) with complete medical records including pain patterns, disability scores, and vitamin D measurements
- Key finding: Four distinct migraine types were identified, but vitamin D levels were similarly low across all types. Being female was a stronger predictor of severe migraines than vitamin D status.
- What it means for you: While vitamin D deficiency is common in migraine sufferers, simply raising your vitamin D may not be the complete answer to controlling migraines. Other factors, especially biological sex, appear more important. Talk to your doctor about a comprehensive migraine management plan.
The Research Details
Researchers looked back at medical records from 95 migraine patients and used a statistical technique called cluster analysis to group them by similar characteristics. They examined 16 different clinical features including pain location (left side, right side, or both), how much the migraines disabled them, how severe the pain was, how long they’d had migraines, and what symptoms accompanied the pain (like nausea or sensitivity to light). They then measured vitamin D levels in everyone’s blood and compared the levels across the different groups. To make sure their groupings were reliable, they used multiple statistical methods and tested the stability of their findings.
Most previous research treated all migraine patients as one group when studying vitamin D. This study recognized that migraines look different in different people—some have pain on one side, others have pain on both sides, and some have more disabling symptoms than others. By identifying these distinct patterns first, researchers could see whether vitamin D deficiency was linked to specific migraine types or was a general problem across all types.
This study used a retrospective design, meaning researchers looked at existing medical records rather than following patients forward in time. The sample size of 95 is moderate. The researchers strengthened their findings by using multiple statistical approaches and testing their results in different ways. However, they only studied one population (Saudi Arabia), so results may not apply everywhere. The study lacked a comparison group of people without migraines, which would have helped determine if vitamin D deficiency is specific to migraines or common in the general population.
What the Results Show
The analysis identified four distinct migraine phenotypes (clinical patterns). The first group (11 patients) had left-sided pain with aura symptoms and the lowest vitamin D levels (median 9.54 ng/mL). The second group (26 patients) had right-sided moderate pain. The third group (28 patients) had bilateral (both-sided) pain with high disability, prominent nausea, and sensitivity to light and sound. The fourth group (30 patients) had bilateral pain with lower disability but more dizziness and heart palpitations. Overall, vitamin D deficiency was extremely common—67.4% of all patients had vitamin D below 20 ng/mL (the deficiency threshold), with an average of 17.01 ng/mL. However, when researchers compared vitamin D levels across the four groups, the differences were not statistically significant (p = 0.153), meaning the variation could have occurred by chance.
Female sex emerged as the only statistically significant predictor of severe migraine phenotype membership. Women were 3.37 times more likely to have the most disabling migraine pattern compared to men. This finding remained consistent when researchers analyzed the data using different statistical methods that didn’t rely on the clustering approach. The vitamin D null finding (no significant difference across groups) also held up across all alternative analytical approaches.
Previous research has suggested links between vitamin D deficiency and migraines, but most studies didn’t account for the fact that migraines present differently in different people. This study’s finding that vitamin D deficiency is common but not significantly different across migraine types suggests that vitamin D may not be the primary driver of migraine severity or type. The prevalence of vitamin D deficiency in this migraine population (67.4%) was statistically similar to the general Saudi population (63-65%), indicating this is a background population phenomenon rather than something specific to migraines.
The study was retrospective, relying on existing medical records, which may have incomplete or inconsistent data. The sample size of 95 is relatively small for cluster analysis. The study included only one geographic population (Saudi Arabia), limiting generalizability. Most importantly, there was no comparison group of people without migraines, so researchers couldn’t determine whether vitamin D deficiency is specific to migraines or common in the general population. The one aura-rich group with notably low vitamin D (n=11) was very small, so findings in that group need confirmation in larger studies.
The Bottom Line
Current evidence (moderate confidence) suggests that vitamin D supplementation alone is unlikely to be a complete solution for migraine management, even though deficiency is common. If you have migraines and low vitamin D, it’s reasonable to address the deficiency as part of overall health, but don’t expect it to be a cure. Work with your doctor on a comprehensive migraine plan that may include other treatments. Women with migraines may benefit from discussing sex-specific migraine management strategies with their healthcare provider.
Anyone with migraines should know that vitamin D deficiency is common but may not be the main cause of their migraines. Women with severe migraines should especially discuss their symptoms with a doctor, as sex appears to be a stronger factor than vitamin D in determining migraine severity. People considering vitamin D supplementation specifically for migraine control should have realistic expectations.
If you start vitamin D supplementation, it typically takes 8-12 weeks to significantly raise blood levels. However, based on this research, you shouldn’t expect dramatic migraine improvement just from raising vitamin D. Any migraine improvements would likely develop gradually over weeks to months as part of a comprehensive treatment plan.
Frequently Asked Questions
Does vitamin D deficiency cause migraines?
Vitamin D deficiency is very common in migraine sufferers (67% in this study), but research shows it doesn’t significantly differ across different migraine types. This suggests vitamin D deficiency alone doesn’t cause migraines, though addressing it may be part of overall health management.
Will taking vitamin D supplements help my migraines?
While vitamin D supplementation is reasonable if you’re deficient, this research shows it’s unlikely to be a complete migraine solution. Expect gradual improvements over months only if combined with other migraine treatments. Consult your doctor about a comprehensive plan.
Are there different types of migraines with different causes?
Research shows four distinct migraine patterns exist based on pain location, disability level, and symptoms like nausea or dizziness. However, these patterns don’t correlate with vitamin D levels, suggesting different causes beyond vitamin D deficiency.
Why do women get more severe migraines than men?
This study found women were 3.37 times more likely to have severely disabling migraines than men. The biological reasons aren’t fully understood, but sex appears a stronger factor than vitamin D in determining migraine severity.
Should I get my vitamin D tested if I have migraines?
Yes, it’s reasonable to check vitamin D levels as part of overall health assessment. If deficient, supplementation may help general health, but don’t expect it to be a migraine cure. Discuss comprehensive migraine management with your doctor.
Want to Apply This Research?
- Log your migraine characteristics weekly: pain location (left, right, or both sides), disability level (1-10 scale), accompanying symptoms (nausea, light sensitivity, dizziness, heart palpitations), and vitamin D supplementation if taking it. Track for 8-12 weeks to see if patterns emerge.
- If you have migraines and haven’t had vitamin D checked, request a blood test from your doctor. If deficient, discuss supplementation as part of a broader migraine management strategy that may include other treatments, stress management, and lifestyle modifications.
- Recheck vitamin D levels every 3 months after starting supplementation. Simultaneously track migraine frequency, severity, and type using the app. After 3-6 months, review whether raising vitamin D correlated with migraine improvement, and adjust your overall migraine management plan accordingly with your doctor.
This research summary is for educational purposes only and should not replace professional medical advice. Migraine management is complex and individualized. Before starting vitamin D supplementation or changing any migraine treatment, consult with your healthcare provider. This study was conducted in one geographic population and may not apply universally. The findings suggest vitamin D deficiency alone doesn’t explain migraine severity, but this doesn’t mean vitamin D supplementation has no role in your personal health plan. Always work with your doctor to develop a comprehensive migraine management strategy tailored to your specific situation.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.