By the way, doctor.  If coffee constricts blood vessels, why would it help migraine sufferers, since the constriction curtails blood flow, which would seem to cause more pain?
Wolpow
Edward
E
D002110:Caffeine / Q000627:therapeutic use*; D003069:Coffee; D006801:Humans; D008881:Migraine Disorders / Q000188:drug therapy*; D014662:Vasoconstrictor Agents / Q000627:therapeutic use*
D003069:Coffee; D014662:Vasoconstrictor Agents; D002110:Caffeine