Heart disease is the #1 cause of death for both men and women. View fact here.
http://www.nhlbi.nih.gov/health/dci/Diseases/Cad/CAD_WhatIs.html
50% of men and 64% of women who died suddenly of heart disease had no previous symptoms.
http://www.americanheart.org/presenter.jhtml?identifier=1200000
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