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Stroke Health Center

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Heavy Drinkers at Greater Risk for Stroke

Drinking 3 or More Alcoholic Drinks a Day Raises Stroke Risk
WebMD Health News
Reviewed by Louise Chang, MD

Sept 10, 2012 -- Heavy drinkers may be at a much greater risk for a bleeding stroke, a new study suggests.

People who drank about three or more alcoholic drinks per day also had the strokes almost a decade and a half before those who didn’t drink quite as much. The findings appear in Neurology.

Exactly how heavy drinking may raise risk of this type of stroke is not clear.

The study included 540 French people with an average age of 71 who had a less common type of stroke called an intracerebral hemorrhage. This type of stroke is caused by bleeding in the brain, not a blood clot.

The people in the study and/or their caregivers or relatives were asked about drinking habits. Fully 25% were heavy drinkers. This was defined as having about three or more drinks per day, or about 1.8 ounces per day of “pure” alcohol. Participants also had CT scans of their brains, and French researchers reviewed their medical records.

The heavy drinkers were about 60 when they had stroke. By contrast, the people who were not heavy drinkers were about 74 when they had a stroke. The heavy drinkers were also more likely to be smokers and did show some evidence of irregularities in their blood that would make them more likely to have a bleeding stroke.

One Drink a Day Is Still OK

“The study does add to our knowledge that excessive drinking is bad for our health in a variety of ways, including increased risk of bleeding into the brain,” says Deepak L. Bhatt, MD, MPH. He is a heart doctor at Brigham and Women's Hospital in Boston and an associate professor at Harvard Medical School.

Still, the study is small, and larger ones will be needed before telling people not to drink past a certain level.

Heavy drinkers may be more likely to have high blood pressure, which is a major risk factor for stroke. “If someone enjoys drinking, I don’t discourage them, but I will caution them even more so after this study to make sure that the amount is considered moderate,” Bhatt says.

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