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Breastcancer.org is a nonprofit organization founded by breast oncologist Marisa C. Weiss, MD, born out of her conviction that people with breast cancer need more information than a doctor’s visit can provide. Breastcancer.org is the leading patient-centered resource for breast health and breast cancer information and support. They engage, educate, and empower people with our expert information and dynamic peer-support community so they can make the best decisions for their lives. Since 2000, they have reached 194 million people worldwide. Breastcancer.org receives more than 20 million visits each year, and they host the world’s largest online breast cancer peer community, with more than 240,000 registered members.