NCHS is the Federal Government's principal vital and health statistics agency. The web site provides "data on vital events as well as information on health status, lifestyle and exposure to unhealthy influences, the onset and diagnosis of illness and disability, and the use of health care." Data available include: tobacco use, life expectancy and long-term illnesses. News releases and fact sheets provide information about the latest health research. Note that many of the publications are available in Adobe Acrobat [.pdf] format only.