Some spontaneously assigned themselves to categories, based on either their personal or their family experiences related to cancer (see below), their theories about specific risk factors,32, 34 or their emotional responses to risk.34 Others reported that health professionals introduced them to the categories that they used.33, 39 In 1 study,38 BRCA1/2 mutation carriers wanted health professionals to provide them with risk “labels.” Here, BRCA1 is linked to cancer.