According to Reuters, a study published in Circulation has found that children exposed to secondhand smoke are at greater risk for developing plaque in their carotid arteries as they get older compared to other children. The implication is that passive smoking not only causes respiratory and developmental health issues for children, but can also have a long-term impact on cardiovascular health. Children of smokers who commonly smoked around the children were four times as likely to have plaque in their carotid arteries as adults. This number was significantly less for children of parents who were more guarded about smoking around their children. The findings show parents who are unwilling to quit smoking that they can significantly limit the health issues caused upon their children simply by changing their smoking behaviors.