Serum and red blood cell magnesium levels in juvenile migraine patients.http://www.ncbi.nlm.nih.gov/pubmed/7868328
"In comparison with normal subjects, migraineurs had significantly lower serum and red blood cell magnesium levels."
Prophylaxis of migraine with oral magnesium: results from a prospective, multi-center, placebo-controlled and double-blind randomized study.http://www.ncbi.nlm.nih.gov/pubmed/8792038
"High-dose oral magnesium appears to be effective in migraine prophylaxis."
Oral Magnesium Load Test in Patients With Migrainehttp://www.ncbi.nlm.nih.gov/pubmed/12005285
"Magnesium retention occurs in patients with migraine after oral loading, suggesting a systemic magnesium deficiency."
Intracellular and plasma magnesium in familial hemiplegic migraine and migraine with and without aurahttp://www.ncbi.nlm.nih.gov/pubmed/8200020
"We found no significant differences between the magnesium levels in the five study groups. We conclude that reduced blood magnesium is unlikely to be related to migraine pathophysiology"
...without access to full text, can't get into 'table 2' to see the magnesium results in this one. would be interesting to see if the average was lower in patients but not 'statistically' so. also wondering if the controls were legit. anyone have full text access?