Last year in Canada, an estimated 25,000 women and 220 men were diagnosed with breast cancer. New patients must navigate through an overwhelming thicket of new information in order to determine their course of treatment. Be the Choice is developing the first comprehensive, publicly available, breast cancer treatment decision support tool. The tool will enable people who have been diagnosed with breast cancer to explore all treatment options on their own schedule, in consultation with family and friends, and in a supportive online setting that promotes more informed discussions with medical providers. Be the Choice will put treatment knowledge in the hands of patients, empowering them to advocate for the options that are the best fit for them.