American Cancer Society (http://www.cancer.org/)
Educational material and more on various types of cancer and risk factors. Good source for information on smoking cessation.
American Heart Association (http://www.heart.org/HEARTORG/)
Educational materials on heart disease and related risk factors
Excellent information on a variety of health-related topics from a website sponsored by the American Academy of Family Physicians
Another excellent site for health-related information from one of the country’s leading medical clinics.