Those women who take two or more drinks of alcohol each day are more likely to develop heart rhythm disturbance, which ultimately increase the probability of having a stroke to a great extend, researchers said.

Earlier researches had already proven that men, who take three to four alcoholic drinks a day, have a great risk for atrial fibrillation and osteoporosis than their counterpart females.

Researchers in the U.S. and Switzerland involved 34,715 American women with not known atrail fibrillation in the start of the study. The vast majority who drank either no or very little alcohol was away from ganger but excessive drinkers have 60 percent elevated risk for atrial fibrillation.

Atrial fibrillation occurs when upper two chambers of heart beat faster than normal pace. Due to this disturbance, heart’s upper chambers fail to expel blood completely, blood can pool and clot. If a piece of this clot lodged in an artery providing blood to brain, a stroke occurs.

“Mild to moderate use of alcohol does not seem to be associated with an increased risk,” said Dr. Christine Albert “But more than two drinks a day can increase the risk of atrial fibrillation and finally heart problem or stroke, it may be that minimizing alcohol use may be helpful.”

Most of the studies that have looked at alcohol and atrial fibrillation were done mostly in men. So we had wanted to look at it in women because relationships could be different, but also women drink different amounts of alcohol than men and have different drinking patterns,” Albert said.