Schaffer is a science writer focusing on medicine and health. She is a frequent contributor to the New Yorker online, where she's written about epidemic disease, vaccines, how our bones influence our minds, and how Jehovah's Witnesses are changing medicine. Formerly a science and medical columnist for Slate, she has contributed to numerous publications, including the New York Times, the Washington Post, the Atlantic, NEO.LIFE, and Bookforum. She is also a contributing editor at Technology Review and a mentor-editor for the Op-Ed Project, which works to increase women's presence in public commentary. @abschaffer.