By AMERICAN HEART ASSOCIATION NEWS

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Nearly half of African-American adults in the U.S. have high blood pressure. That’s among the highest in the world.

High blood pressure is a leading risk factor for stroke, putting African-Americans at increased risk. Their overall risk of having a first stroke is nearly twice that of whites. Yet African-Americans are less likely than their white counterparts to have high blood pressure under control.

The American Heart Association and Kaiser Permanente assembled a group of researchers, physicians and community health leaders on Twitter Wednesday to share ways African-Americans and other ethnic groups can lower blood pressure and keep it under control.