Women who experience the type of migraine headaches that include an "aura" -- described as a glowing effect seen around objects as the headache comes on -- have higher risks of stroke than women who don't experience the effect, a new study says. Researchers with Brigham and Women's Hospital and Harvard Medical School in Boston found women with aura migraines were 50% more likely to have a stroke and 70% more like to have an ischemic stroke -- the kind caused by a blockage.

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