The linking of the Internet with health and medicine involves all levels of society, including individuals, health care providers, professional organizations, communities, and local and federal governments. A growing body of evidence suggests that despite the benefits of the Internet, this means of communication also figures into the creation of new forms of health risk for some users. This paper examines the effects of the Internet on the promotion of both health and illness. The discussion focuses on those factors of online communication that produce positive health outcomes and also the potential for health risk. Implications for health providers and for better serving patients are analyzed together with recommendations for improving services for those who go online to access health information.