VOA慢速英语:Heart Calcium Build-Up Increases Risk of Early Death

calcium – n. a substance that is found in most plants and animals and that is especially important in people for strong healthy bones

artery – n. any one of the tubes that carry blood from the heart to all parts of the body

atherosclerosis – n. a disease in which plaque builds up inside the arteries. (Plaque is a harmful material that can form in arteries and be a cause of heart disease.)

cardiac – adj. of or relating to the heart

dot – n. a small amount

marked – adj. very noticeable

elevated – adj. higher than normal

coronary – adj. of or relating to the heart and especially to the vessels that supply blood to the heart

risk factor – n. something that increases risk

cholesterol – n. a substance that is found in the bodies of people and animals

modest – adj. not very large in size or amount

cohort – n. a group of people used in a study who have something (such as age or social class) in common