Most US women face stroke risk

Estrogen may give women an edge in resisting heart disease that can be caused in part by air pollution, a new West Virginia University study found.Researchers determined that males and post-menopuasal females are more likely to suffer damaged arteries linked to diesel exhaust than women of childbearing age.That coincides with a national study released this year showing older women are at significantly higher risk for heart problems caused by air pollution than other people.