Migraines are more than “just headaches.” They are a serious neurological condition. They are one of the top causes of disability worldwide and affect both children and adults.
There isn’t one single cause of migraines. Instead, several factors may interact, including oxidative stress, changes in blood vessels, overactive nerve signals, and imbalances in key minerals.
One mineral that may play a role? Magnesium.
Low magnesium levels (called hypomagnesemia) are thought to be a possible migraine trigger. Magnesium deficiency is common and can happen for many reasons, including:
Magnesium is essential for brain health. It supports energy production in cells, helps regulate nerve signals, maintains healthy blood vessel tone, and keeps electrolytes balanced. When magnesium is low, these systems may not work properly—potentially increasing migraine risk.
Importantly, blood tests don’t always tell the full story. Some people with migraines have normal blood magnesium levels but low intracellular magnesium. This “hidden” deficiency may still contribute to symptoms.
Both oral and intravenous (IV) magnesium have been studied as migraine treatments. Several clinical trials show that taking 500–600 mg of oral magnesium daily can reduce:
Many reviews and analyses report positive results. However, some studies say the evidence is not yet strong enough to draw firm conclusions.
Overall, magnesium appears to be a safe and relatively low-cost option for migraine prevention. Still, larger, better-designed studies are needed to confirm how well it works compared with standard migraine medications.
Magnesium may not be the whole answer—but for some people, it could be an important piece of the migraine puzzle.
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