Magnesium is one of the better-researched supplements for migraine prevention, with some studies reporting fewer attacks, reduced severity or fewer migraine days. The evidence is promising but not definitive. Magnesium may help some people, but it should not be presented as a guaranteed migraine treatment. A good nutritional foundation still matters. Magnesium-rich foods such as nuts, seeds, legumes, whole grains and leafy green vegetables should form part of the broader diet