Collecting information on who has been diagnosed with cancer

Since the study started in 2004, approximately 4,000 of the 113,000 study participants have reported to us that they have been diagnosed with breast cancer, and 5,000 have been diagnosed with other types of cancer.  Until now, we have relied on your responses through questionnaires or notifications to learn about these cancer diagnoses.  This year, we are introducing a new method to identify cancer diagnoses using the NHS cancer registration system.