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premature – adj. happening, arriving, existing, or performed before the proper, usual, or intended time
cardiovascular – adj. of, relating to, or involving the heart and blood vessels
secondhand smoke – n. tobacco smoke that is exhaled by smokers or is given off by burning tobacco and is inhaled by persons nearby
exposure – n. the fact or condition of being affected by something or experiencing something : the condition of being exposed to something
gap – n. a missing part
quit – v. to stop doing an action or activity
lose ground – phrase. become less popular or to be given less support
convention – n. a general agreement about basic principles or procedures
karaoke – n. a form of entertainment in which a device plays the music of popular songs and people sing the words to the songs they choose : karaoke club – n. a place where karaoke is performed
epidemic – n. an outbreak of disease that spreads quickly and affects many individuals at the same time
