Many health factors can give rise to migraine headaches, and nutritional supplements can help to address some of the root causes. For centuries, the leaves of the herb feverfew (Tanacetum parthenium) have been used in traditional medicine to treat headaches. Scientific studies show feverfew effectively reduces the frequency and severity of migraine attacks by inhibiting inflammation and restoring the muscle tone of blood vessels. Researchers have found that magnesium deficiency is common in people who suffer from migraines, and that supplementation can bring relief. Ginger (Zingiber officinale) root has also been used in clinical practice because it reduces inflammation and platelet aggregation, factors linked to migraine.