New Delhi, Feb 04 (ANI): Migraines could increase the risk of cardiovascular diseases, suggests a study. According to the researchers, migraine increases the risk of heart attacks, stroke, blood clots and an irregular heart rate. Around one billion people worldwide are affected by migraine. It has considerable impact on quality of life and imposes a substantial burden on society. Previous studies have suggested a link between migraine and stroke and heart attacks, particularly among women, but the link between migraine and other heart problems are less well known. In a bid to rectify this, researchers from Aarhus University Hospital, Denmark and Stanford University, USA set out to examine the risks of heart conditions including heart attacks; stroke; peripheral artery disease (narrow arteries which reduce blood flow to limbs); blood clots and fast and irregular heart rates in people who experience migraines compared with people who don't. They compared data from over 51,000 people who had been diagnosed with migraine with over 510,000 people who were migraine free. For each person with migraine, they matched 10 people of the same age and gender who were migraine free. Over a period of 19 years, the researchers found that migraine was positively associated with heart attack, stroke, blood clots and irregular heart rate.