Facilitating Web-based Patient Decision Support: Decision About Medication to Lower Breast Cancer Risk

Background: * Chemoprevention is the use of preventive medications to reduce the risk of breast cancer for women who are at a high risk of developing the disease. Although the treatment has shown effectiveness in preventing cancer development, chemoprevention is notably underutilized even by women who are at a high risk of developing breast cancer. * Researchers are interested in determining if better decision support mechanisms, such as interactive Web sites, can help to overcome some of the barriers to chemoprevention. Objectives: \- To develop and test a prototype Web-based module that will provide decision support to women who are considering chemoprevention for breast cancer. Eligibility: * Women 35 years of age and older who are at high risk for breast cancer and whose doctor has recommended chemoprevention (either Tamoxifen or Raloxifene), and who have no other history of cancer (apart from non-melanoma skin cancer or precancerous cervical lesions). * Participants must have a working e-mail address and access to a computer with internet access and a telephone. Design: * Participants who are considering chemoprevention will be randomized to a Web-based decision support module or standard care online information resources. * Participation lasts two months and involves using the online resources provided and filling out questionnaires two times during the study (at the beginning and the end). The first time will be at the begin of the study. * No medical treatments are offered as a part of this study