If you’re like most Americans, you don’t know the signs of stroke. Only 8 percent of those recently surveyed in the American Stroke Association/Ad Council Stroke Awareness Continuous Tracking Study could identify each letter in F.A.S.T., an acronym of the most common stroke warning signs.

Supermodel and Actress Claudia Mason is helping the American Heart Association/American Stroke Association raise awareness for the world’s second-leading cause of death on World Stroke Day, Oct. 29.