July 3, 2008 Health Check: Cancer, Alzheimer's, Heart Disease Play video

(NECN) - Doctors at Mass-General Hospital in Boston have developed a new test that identifies tiny cancer cells in a person's blood stream, which would allow treatments to begin at the earliest stages possible.

Men and women face different time tables when it come to Alzheimer's disease.

And green tea may be a preventative for heart disease.

Good Morning Live's Karen Swensen runs down today's Health Check.