Women who suffer from migraines while they are pregnant are more likely to have a stroke, heart attack or other cardiovascular problems, new research claims.
US researchers found that migraines, extremely painful headaches which can include vision impairment, are strongly linked to vascular diseases (those which affect the arteries from the heart).
Scientists at Duke University studied a national database of nearly 17 million women pregnant between 2000 and 2003. A total of 33,956 of the women were treated for migraines.
The results showed that women treated for migraines during pregnancy were 19 times more likely to suffer a stroke, five times more likely to have a heart attack and more than twice as likely to have heart disease, blood clots and other vascular problems.
Previous studies have linked migraine with stroke and heart disease in women, but study author Cheryl Bushnell said that this latest research "now supports the same association in women who are pregnant".
"Women with persistent migraine during pregnancy should be aware of their risk factors, such as high blood pressure, high cholesterol, diabetes, history of blood clots, heart disease, and prior stroke," she added.
Further research, Dr Bushnell concludes, is needed to "validate" the findings.
The study was presented at the American Academy of Neurology's 59th Annual Meeting in Boston.
Click here to run an energy price comparison, and see if you could be paying less for your gas and electricity.