Health literacy is an important issue in public health today, especially as patients are taking a greater role in obtaining information about their health. Health literacy is commonly defined as "the degree to which individuals have the capacity to obtain, process, and understand basic health information and services needed to make appropriate health decisions". While there is a large body of literature concerning health literacy and adults, few studies have focused on adolescents. Adolescents may have less interaction with the health care system and lower health care costs than adults, but they are increasingly involved with their health care, especially those with chronic illness. They are frequent users of mass media and other technology to access health information and are a target group for many health-related educational interventions. Adolescents are also at a crucial stage of development, learning skills they will carry with them into adulthood. The goal of this paper is to provide a summary of issues justifying the importance of studying health literacy as it relates to adolescents and to provide a framework and suggestions for future research. (Contains 1 figure.)