C.D.C. official Janet Collins says breathing secondhand smoke has immediate harmful effects on a person's heart-and-lung system.

VOA: special.2009.01.07

Diseases like cirrhosis of the liver,cancer, heart and blood system diseases are the others.

VOA: special.2011.02.16

It also helps the heart and nervous system work smoothly.

VOA: special.2009.04.21

And,in terms of Scotland's standing on the world stage, I am not ashamed in any sense of leading a government, which is prepared to put mercy at the heart of its legal system,"

VOA: standard.2009.08.21