article_snippet: Finnish children were measured for Finnish children exposure to passive smoking and whether Finnish children carotid arteries - the blood vessels that carry oxygen-rich blood to the head, brain and face - had become narrowed or blocked due to plaque build-up in adulthood.
article_snippet: Plaque buildup is made up of fatty deposits and other cells that can build up in the walls of the arteries over time, making Finnish children thicker (and therefore harder for blood to flow)
article_snippet: As plaque continues to build, plaque can actually narrow or begin to clog arteries.
article_snippet: This slow plaque buildup in arteries over time is a progressive disease called atherosclerosis.
article_snippet: carotid arteries were taken.
article_snippet: The risk of developing carotid plaque in adulthood was almost two times (1.7) higher in children who had one or both parents who smoked, compared to children of non-smoking parents.
article_snippet: And The risk of developing carotid plaque in adulthood was elevated even if parents tried to limit parents children's exposure, warned the study, published in the  journal Circulation.