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| Source: British Medical Journal Released: Fri 10-Dec-2004, 09:20 ET
Embargo expired: Sun 12-Dec-2004, 18:10 ET
Risk of Stroke Doubles for Migraine Sufferers
Migraine sufferers are twice as likely to suffer a stroke than those who don't
experience migraines, according to a report.
Please click on the link for the full text of the paper Please remember to
credit the BMJ as source
Risk of ischaemic stroke in people with migraine: systematic review and
meta-analysis of observational studies ? BMJ Online First
Newswise — Migraine sufferers are twice as likely to suffer a stroke than
those who don't experience migraines, according to a report in this week's BMJ.
In the first review of its kind, researchers in Canada and the US looked at 14
studies which investigated an association between stroke and migraine. They
found that the risk of stroke for migraine sufferers was 2.16 times that for
non-sufferers.
Those who have interrupted vision from light affects (aura) with their migraine
were at slightly higher risk than those without; 2.27 times as likely to suffer
a stroke compared to 1.86.
Three of the studies showed that women migraine sufferers who are also taking
the oral contraceptive pill were up to eight times more likely to suffer a
stroke than those not taking the pill. Though these results were at odds with
other studies which suggest a smaller degree of increased risk for women in
this category ? indicating the need for much more research in this area.
The increased risk of stroke is probably down to the reduced blood flow to the
brain which usually occurs in a migraine, suggest the researchers.
Migraine is the most common form of headache in young adults, with as many as a
quarter of women in their mid to late thirties suffering the condition. The
link between migraine and stroke established in this review raises new
questions about whether these two conditions share similar risk factors, which
must be further researched. In particular, much more investigation is needed
into risk factors for migraine sufferers who are taking oral contraceptives,
they conclude.
Click here to view full paper:
http://press.psprings.co.uk/bmj/december/migraine.pdf
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